4 Horizontal Flue Kit - for HSU/MSU50 and HSU/MHU80 - F102860- 4 Horizontal Vent Kit For use with Mr Skip to Header Skip to Main Content Skip to Footer Call Us 800.472.3292 Sep 26, 2021 · 4"Horizontal Venting Kit Mr. Heater,Big Maxx , Hot Dawg, modine gas heater vent. $269.99. $299.99. Free shipping. 3"Vertical Venting Kit Mr. Heater,Big Maxx , Hot ... Saf-T Vent® Model EZ Seal/EZ 316 . Single Wall . Gas Vent Connector . Chimney Liner & Special Gas Vent (USA) / Type BH Vent Class I/II (Canada) For Venting Residential, Commercial & Industrial Appliances . Category I, II, III & IV Appliances . 3”-5” Diameter Vent for use on Positive, Neutral and Negative . Pressures up to 9” W.C. This simple kit includes a variety of venting options that will be enough for most users. This kit is intended for horizontal venting of a power vented unit heater that requires 4" venting. This can be used for Reznor UDX30-125 power vented unit heaters. This venting requires 3” clearance to combustibles. Always check your local codes before ...4 Horizontal Flue Kit - for HSU/MSU50 and HSU/MHU80 - F102860- 4 Horizontal Vent Kit For use with Mr Skip to Header Skip to Main Content Skip to Footer Call Us 800.472.3292 Mr. Heater. 30,000 BTU Vent Free Blue Flame Natural Gas Heater. Add to Cart. Compare. Exclusive. More Options Available $ 239. 00 (236) Model# MHC125FAV. Mr. Heater. Final Price $ 489 49. each. You Save $60.50 with Mail-In Rebate. Ceiling-mounted forced air unit heater turns garages, barns, and workshops into heated workspaces. 80,000 BTUs heat up to 2,667 sq ft, or approximately a 3 or 4-car garage. Ships as natural gas; includes natural gas to propane conversion kit. View More Information.Mr. Heater Universal 4-in Vent Kit Item # 46677 Model # F202858 Get Pricing and Availability Use Current Location Universal ventilation kit for the Mr. Heater Big Maxx garage heater Adapter included for compatibility with 3" pipe This item is no longer sold on Lowes.comOct 14, 2015 · Features. This is a horizontal concentric venting kit designed for use with Modine gas fired unit heaters. The kit includes a concentric vent kit adapter box for arranging the tubing properly, as well as both vent and combustion air pipe terminals. Mr Heater horizontal 4 Inch stainless steel vent kit for Mr Heater unit heaters. Includes: 1, 3inch to 4inch adapter, 1- 4x36inch B-vent pipe, 2- 4x24inch vent pipe, 1- 4inch 90-degree elbow, wall thimble, roof flashing, storm collar, vent capAmazon.com: Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845 : Tools & Home Improvement Tools & Home Improvement › Building Supplies › HVAC › Heaters & Accessories $43093 FREE delivery Monday, September 11. Order within 18 hrs 31 mins. Details Select delivery locationMr. Heater Big Maxx Silver Wall-mounted Garage Heater Vent Kit. The category 1 vertical 4 in vent kit provides class 1 single wall B-vent ducting for Mr. Heater Big Maxx unit heaters, ranging from 50,000, 80,000, and 125,000 BTUs. Complies with US standard (UL441) and Canadian standard (S605). Designed for vertical installation only.Category III 6in Horizontal Vent Kit. SKU. F102861. Category III 6in Horizontal Vent Kit for use with 50,000-200,000 BTU Unit Heaters.This heater offers the operating versatility and safety that you have come to expect from Mr. Heater®. 125,000 BTU per hour. For use with natural gas. Heats up to 4,167 sq. ft. Spark ignition features self-diagnostic control module. Includes 2 angle brackets for ceiling mount. Low Profile Design - Can be installed in low-ceiling buildings.FFXWTSF Portable AC Window Vent Kit 5.9” Coupler Adjustable Vertical Horizontal. $29.97. Free shipping. DuraVent Vent Unit Heater Kit — 4in. Horizontal, Model# 810006013 (Q-26)Category I 4in Vertical Vent Kit. SKU. F102848. Category I 4in Vertical Vent Kit for use with 50,000-200,000 BTU Unit Heaters. find a distributor. Buy Mr. Heater F260550 Big Maxx MHU50NG ... Powered exhaust allows for vertical or horizontal venting ; ... Mr. Heater F299201 Vent-Free Blower Accessory Kit (2016 ... Feb 10, 2020 · 80,000 BTU Natural Gas Unit Heater with LP Conversion Kit and Thermostat SKU: 8547085 Model : F260580 Vertical and horizontal vent kits are also on sale 4 in. Vertical Vent Kit SKU: 8164899 Price $89.97 4 in. Stainless-Steel Horizontal Vent Kit SKU: 8459042 Price $281.97 Heatfab is the leading manufacturer of high quality venting systems for special gas vent applications, specified by OEM's for over 20 years. Time-tested installations thoughout North America and globally. Our Saf-T Vent® line of products are perfect for your commercial and industrial needs. ANSI Category I, II, III, and IV appliances: boilers, water heaters and furnaces.Mr. Heater. Vent Free 30,000 BTU Blue Flame Propane Space Heater in Black. Add to Cart. Compare $ 77. 32 (115) Model# MH4GC. Mr. Heater. 4,000 BTU Radiant Propane ...Mr. Heater Universal 4-in Vent Kit Item # 46677 Model # F202858 Get Pricing and Availability Use Current Location Universal ventilation kit for the Mr. Heater Big Maxx garage heater Adapter included for compatibility with 3" pipe This item is no longer sold on Lowes.com Amazon.com: Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845 : Tools & Home Improvement Tools & Home Improvement › Building Supplies › HVAC › Heaters & Accessories $43093 FREE delivery Monday, September 11. Order within 18 hrs 31 mins. Details Select delivery location Shop Mr. Heater Big Maxx 4-in Horizontal Residential Adapter, B-Vent Pipe, Vent Pipe, Elbow, Wall Thimble, Roof Flashing, Storm Collar, Vent Cap at Lowe's.com. New cat III SS sealed 4-in horizontal ducting for unit heaters. FFXWTSF Portable AC Window Vent Kit 5.9” Coupler Adjustable Vertical Horizontal. $29.97. Free shipping. DuraVent Vent Unit Heater Kit — 4in. Horizontal, Model# 810006013 (Q-26)Shop 1 mr heater horizontal vent kit at Northern Tool + Equipment. Skip to content. Support. Close. Help; Sales 1-800-221-0516. Customer Care 1-800-222-5381. Chat ... This Mr. Heater Big Maxx™ Natural Gas Garage/Workshop Unit Heater is quiet and vented for easily heating a 2- to 3-car garage. The low-profile design requires only 1in. clearance from the ceiling (two angle brackets are included). Big Maxx features power exhaust for vertical or horizontal venting.Power exhaust allows for vertical or horizontal venting; Designed for right or left side piping, electrical and flue connections by simply rotating 180° Tubular heat exchanger and spark ignition; 6 Amp draw; Horizontal venting kit, Item# 29794, and vertical venting kit sold separately; Thermostat sold separately — Item# 173641 ; Includes LP ... Sep 4, 2023 · Model Number: RTG20096 Menards ® SKU: 6374134. Everyday Low Price. $269.99. 11% Mail-In Rebate Good Through 8/20/23. $29.70. Final Price $ 240 29. each. You Save $29.70 with Mail-In Rebate. Kit includes: 2-wall penetration plates, horizontal termination, 1-appliance adapters, 94 degree elbow, 12" section, di-electric grease tube for gaskets. Category 1 horizontal 4 in vent kit for use with Mr. Heater Big Maxx or Heatstar by Enerco brand unit heaters ranging from 50,000, 80,000, and 125,000 BTUs. Stainless steel 4 in sealed ducting meets new category 3 certifications, Includes: 4 in x 6-19 in adjustable pipe, 4 in x 12 in vent pipe, 4 in 45-degree elbow, 4 in wall thimble, 4 in ... Amazon.com: Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845 : Tools & Home Improvement Tools & Home Improvement › Building Supplies › HVAC › Heaters & Accessories $43093 FREE delivery Monday, September 11. Order within 18 hrs 31 mins. Details Select delivery locationMr. Heater Big Maxx 50,000 BTU Natural Gas Unit Heater with Propane Conversion Kit. 0.0. (0) $928.99. Mr. Heater Big Maxx 80,000 BTU Natural Gas Unit Heater with Propane Conversion Kit. 4.0. (2) $927.99. Mr. Heater Big Maxx Unit Heater Fuel Conversion Kit, LP to NG. Buy Mr. Heater 4 in. Category 1 Vertical Vent Kit at Tractor Supply Co. Great Customer Service.Category I 4in Vertical Vent Kit. SKU. F102848. Category I 4in Vertical Vent Kit for use with 50,000-200,000 BTU Unit Heaters. find a distributor. Oct 14, 2015 · Features. This is a horizontal concentric venting kit designed for use with Modine gas fired unit heaters. The kit includes a concentric vent kit adapter box for arranging the tubing properly, as well as both vent and combustion air pipe terminals. Shop 1 mr heater horizontal vent kit at Northern Tool + Equipment. Skip to content. Support. Close. Help; Sales 1-800-221-0516. Customer Care 1-800-222-5381. Chat ... Buy Mr. Heater Category 3 Horizontal 4 in. Vent Kit at Tractor Supply Co. Great Customer Service. Mr. Heater Universal 4-in Vent Kit Item # 46677 Model # F202858 Get Pricing and Availability Use Current Location Universal ventilation kit for the Mr. Heater Big Maxx garage heater Adapter included for compatibility with 3" pipe This item is no longer sold on Lowes.com Aug 28, 2023 · SS HORIZONTAL VENT KIT Model # F102860. by MR. HEATER. Item # 445726. UPC: 00089301028609. $499.99. In-store price may vary from online price. Not all products available at all stores. Free Ship-to-Store. Shop 25 mr heater horizontal vent kit at Northern Tool + Equipment. ... DuraVent Vent Unit Heater Kit — 4in. Horizontal, Model# 810006013 Reg. $ 444. 99. Sale ...Mr. Heater Big Maxx Silver Wall-mounted Garage Heater Vent Kit. The category 1 vertical 4 in vent kit provides class 1 single wall B-vent ducting for Mr. Heater Big Maxx unit heaters, ranging from 50,000, 80,000, and 125,000 BTUs. Complies with US standard (UL441) and Canadian standard (S605). Designed for vertical installation only.Category III 4in Stainless Steel Horizontal Vent Kit. $428.59. Add to Wish List. Add to Cart. ... COPYRIGHT MR. HEATER 2020. Enerco Group Inc / Mr. Heater 4560 West ... Mr. Heater 30000 BTU Vent Free Radiant 20# Propane Indoor Space Heater (51) ... Mr. Heater F102860 4" Stainless Steel Horizontal Vent Kit for Big Maxx Heaters.Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845. 4.0 out of 5 stars 8. $559.65 $ 559. 65. FREE delivery ... Mr. Heater F299201 Vent-Free Blower Accessory Kit (2016-present), Multi. $382.06. Mr. Heater 4 inch Stainless Steel Horizontal Vent Kit for Big Maxx MHU50 and MHU80 Unit Heaters. $149.99. Mr. Heater Vent Free Blower Fan Kit with 12Ft Regulator Accessory Kit Bundle. Add. $83.87. Mr. Heater 12 ft. Remote Propane Installation Kit for Vent Free Units.4 Horizontal Flue Kit - for HSU/MSU50 and HSU/MHU80 - F102860- 4 Horizontal Vent Kit For use with Mr Skip to Header Skip to Main Content Skip to Footer Call Us 800.472.3292 HEATER. #5530-039. 3" - 4" Vertical Vent Kit (2) MR. HEATER. #5530-810. 1 Page 1 of 1. When you have to or want to work in an outbuilding in the depths of winter, you won’t last long without a heating source. Enerco’s Mr. Heater brand has been developing innovative heaters since 1984, becoming one of North America’s most popular brands. Category III 4in Stainless Steel Horizontal Vent Kit. $428.59. Add to Wish List. Add to Cart. ... COPYRIGHT MR. HEATER 2020. Enerco Group Inc / Mr. Heater 4560 West ... Saf-T Vent® Model EZ Seal/EZ 316 . Single Wall . Gas Vent Connector . Chimney Liner & Special Gas Vent (USA) / Type BH Vent Class I/II (Canada) For Venting Residential, Commercial & Industrial Appliances . Category I, II, III & IV Appliances . 3”-5” Diameter Vent for use on Positive, Neutral and Negative . Pressures up to 9” W.C. F299201 - Vent Free Blower Fan Kit ... COPYRIGHT MR. HEATER 2020. Enerco Group Inc / Mr. Heater 4560 West 160th St. Cleveland, OH 44135. PHONE: 1 (800) 251-0001. Vent Size Compatible Gas Heaters 3 inch Modine Hot Dawg - HD30, HD45, HD60, & HD75 4 inch Modine Hot Dawg - HD100 & HD125 Mr. Heater / Big Maxx - MHU50, MHU80, MHU125 Reznor - UDX & UDZ (up to 125K BTU) Dayton - Low profile unit heaters up to 120K BTU These universal heater exhaust kits come complete with everything needed to vent a gas heater up to 3' (additional pipe and/or a drip tee may be ... Mr. Heater Big Maxx 50,000 BTU Natural Gas Unit Heater with Propane Conversion Kit. 0.0. (0) $928.99. Mr. Heater Big Maxx 80,000 BTU Natural Gas Unit Heater with Propane Conversion Kit. 4.0. (2) $927.99. Mr. Heater Big Maxx Unit Heater Fuel Conversion Kit, LP to NG.Sep 4, 2023 · Heatfab is the leading manufacturer of high quality venting systems for special gas vent applications, specified by OEM's for over 20 years. Time-tested installations thoughout North America and globally. Our Saf-T Vent® line of products are perfect for your commercial and industrial needs. ANSI Category I, II, III, and IV appliances: boilers, water heaters and furnaces. Final Price $ 489 49. each. You Save $60.50 with Mail-In Rebate. Ceiling-mounted forced air unit heater turns garages, barns, and workshops into heated workspaces. 80,000 BTUs heat up to 2,667 sq ft, or approximately a 3 or 4-car garage. Ships as natural gas; includes natural gas to propane conversion kit. View More Information. Mr. Heater F299201 Vent-Free Blower Accessory Kit (2016-present), Multi. $382.06. Mr. Heater 4 inch Stainless Steel Horizontal Vent Kit for Big Maxx MHU50 and MHU80 Unit Heaters. $149.99. Mr. Heater Vent Free Blower Fan Kit with 12Ft Regulator Accessory Kit Bundle. Add. $83.87. Mr. Heater 12 ft. Remote Propane Installation Kit for Vent Free Units. Final Price $ 489 49. each. You Save $60.50 with Mail-In Rebate. Ceiling-mounted forced air unit heater turns garages, barns, and workshops into heated workspaces. 80,000 BTUs heat up to 2,667 sq ft, or approximately a 3 or 4-car garage. Ships as natural gas; includes natural gas to propane conversion kit. View More Information.Mr. Heater F299201 Vent-Free Blower Accessory Kit (2016-present), Multi. $382.06. Mr. Heater 4 inch Stainless Steel Horizontal Vent Kit for Big Maxx MHU50 and MHU80 Unit Heaters. $149.99. Mr. Heater Vent Free Blower Fan Kit with 12Ft Regulator Accessory Kit Bundle. Add. $83.87. Mr. Heater 12 ft. Remote Propane Installation Kit for Vent Free Units. Mr. Heater 4 inch Stainless Steel Horizontal Vent Kit for Big Maxx MHU50 and MHU80 Unit Heaters [wrp asin="B008DBQNO0"] F102860 Features: -All parts for complete venting. -Adjustable elbow. Product Type: -Vent kit/Diffuser. Material: -Metal. Number of Items Included: -9. Pieces Included: -adapter, b-vent pipe, 2 vent pipes, 90 degree elbow, wall thimble, roof flashing, stormThis kit includes one 3in. to 4in. adapter, one 4in. x 6-19in. adjustable length pipe, one 4in. x 12in. vent pipe, one 4in. 45 degree elbow, one 4in. square wall thimble, one 4in. screened termination tee, four sheet metal screws, and a 2.8 fl oz of high temperature silicone. Stainless Steel, it meets new 2012 standards. INCLUDESThis kit includes one 3in. to 4in. adapter, one 4in. x 6-19in. adjustable length pipe, one 4in. x 12in. vent pipe, one 4in. 45 degree elbow, one 4in. square wall thimble, one 4in. screened termination tee, four sheet metal screws, and a 2.8 fl oz of high temperature silicone. Stainless Steel, it meets new 2012 standards. INCLUDES Mr. Heater Big Maxx 50,000 BTU Natural Gas Unit Heater with Propane Conversion Kit. 0.0. (0) $928.99. Mr. Heater Big Maxx 80,000 BTU Natural Gas Unit Heater with Propane Conversion Kit. 4.0. (2) $927.99. Mr. Heater Big Maxx Unit Heater Fuel Conversion Kit, LP to NG.Mr. Heater ventilation kits are designed to fit specified heaters. These kits make venting to code possible. The kits include the necessary components for garage heaters requiring direct venting of combustion byproducts. They are available in vertical mount, made from galvanized steel or horizontal mount, made from stainless steel.Shop 25 mr heater horizontal vent kit at Northern Tool + Equipment. ... DuraVent Vent Unit Heater Kit — 4in. Horizontal, Model# 810006013 Reg. $ 444. 99. Sale ...The Mr. Heater Big Maxx Forced Air Natural Gas Unit Heater is efficient and effective convection heat for your garage or workshop for residential or commercial use. The MHU125 Mr Heater Big Maxx Unit has the follwoing: 125,000 BTU per hour. For use with natural gas. Heats up to 5,000 sq. ft. Spark ignition features self-diagnostic control module.Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845. 4.0 out of 5 stars 8. $559.65 $ 559. 65. FREE delivery ... Shop 1 mr heater horizontal vent kit at Northern Tool + Equipment. Skip to content. Support. Close. Help; Sales 1-800-221-0516. Customer Care 1-800-222-5381. Chat ... Mr. Heater 4 inch Stainless Steel Horizontal Vent Kit for Big Maxx MHU50 and MHU80 Unit Heaters, One Size, Metal 4.2 out of 5 stars 169 7 offers from $374.99buy a garage heater, there are several features to look out for.. Mr. Heater 4 inch Stainless Steel Horizontal Vent Kit for Big Maxx MHU50 and MHU80 Unit Heaters From the Manufacturer. These stainless steel parts are designed to fit the MHU50 or MHU80 Big Maxx Garage Heaters. Reviewed in the United States on February 5, 2018.Shop 25 mr heater horizontal vent kit at Northern Tool + Equipment. ... DuraVent Vent Unit Heater Kit — 4in. Horizontal, Model# 810006013 Reg. $ 444. 99. Sale ...Aug 28, 2023 · SS HORIZONTAL VENT KIT Model # F102860. by MR. HEATER. Item # 445726. UPC: 00089301028609. $499.99. In-store price may vary from online price. Not all products available at all stores. Free Ship-to-Store. Please call our Service Department at 1-800-251-0001, where our technicians will gladly assist you. To order Service Parts in Canada, you may use the schematic tool to find the correct item numbers but must go to Lion Cove Parts to place your order. This simple kit includes a variety of venting options that will be enough for most users. This kit is intended for horizontal venting of a power vented unit heater that requires 4" venting. This can be used for Reznor UDX30-125 power vented unit heaters. This venting requires 3” clearance to combustibles. Always check your local codes before ... This Mr. Heater Big Maxx™ Natural Gas Garage/Workshop Unit Heater is quiet and vented for easily heating a 2- to 3-car garage. The low-profile design requires only 1in. clearance from the ceiling (two angle brackets are included). Big Maxx features power exhaust for vertical or horizontal venting.Mr. Heater 4 inch Stainless Steel Horizontal Vent Kit for Big Maxx MHU50 and MHU80 Unit Heaters, One Size, Metal 4.2 out of 5 stars 169 7 offers from $374.99 Mr Heater horizontal 4 Inch stainless steel vent kit for Mr Heater unit heaters. Includes: 1, 3inch to 4inch adapter, 1- 4x36inch B-vent pipe, 2- 4x24inch vent pipe, 1- 4inch 90-degree elbow, wall thimble, roof flashing, storm collar, vent cap Pay in 4 interest-free installments of $28.75 with. Learn more. Free sitewide shipping over $99*. Low price guarantee*. Safely exhaust your power vented gas-fired heater with our easy-to-use horizontal vent kit. Each kit contains 4 - 2ft. length of vent pipe, a corrosion resistant galvanized steel vent cap, wall thimble. Mr. Heater Big Maxx Silver Wall-mounted Garage Heater Vent Kit. The category 1 vertical 4 in vent kit provides class 1 single wall B-vent ducting for Mr. Heater Big Maxx unit heaters, ranging from 50,000, 80,000, and 125,000 BTUs. Complies with US standard (UL441) and Canadian standard (S605). Designed for vertical installation only. This Item: Mr. Heater Big Maxx Natural Gas Garage/Workshop Unit Heater — 50,000 BTU, LP Conversion Kit, Model# F260550 $499.99 Thermostat For Mr. Heater Garage Heaters $21.99 DuraVent Vent Unit Heater Kit — 4in. Arrives by Tue, Dec 27 Buy Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845 at Walmart.com FREE shipping by Christmas. Order by 12/21 at 2pm & get gifts in time. $35 min. Restrictions apply. Mr Heater horizontal 4 Inch stainless steel vent kit for Mr Heater unit heaters. Includes: 1, 3inch to 4inch adapter, 1- 4x36inch B-vent pipe, 2- 4x24inch vent pipe, 1- 4inch 90-degree elbow, wall thimble, roof flashing, storm collar, vent cap Mr. Heater. 30,000 BTU Vent Free Blue Flame Natural Gas Heater. Add to Cart. Compare. Exclusive. More Options Available $ 239. 00 (236) Model# MHC125FAV. Mr. Heater.
F273868 - Horizontal Vent Propane Two Stage Regulator|1/4in Female Pipe Thread ... COPYRIGHT MR. HEATER 2020. Enerco Group Inc / Mr. Heater 4560 West 160th St. . Allstate 877 927 san francisco
Jul 13, 2013 · You looking to find the "Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845" Good news! You can purchase Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845 with secure price and compare to view update price on this product. The Mr. Heater Big Maxx 50,000 BTU unit heater will turn your garage or barn into a work space you can use all year-round. Uses a built-in high velocity electric fan to pull cool air in and across the heat exchanger, then forces warm, comfortable air out. Its low profile design requires only a 10 ft minimum ceiling height and 1 in mounting ...This Mr. Heater Big Maxx™ Natural Gas Garage/Workshop Unit Heater is quiet and vented for easily heating a 2- to 3-car garage. The low-profile design requires only 1in. clearance from the ceiling (two angle brackets are included). Big Maxx features power exhaust for vertical or horizontal venting.Mr. Heater MHVFB20NGT Vent-Free 20,000 BTU Blue Flame Natural Gas Heater + Mr. Heater F299201 Vent-Free Blower Accessory Kit (2016 - present) 1. $27999. FREE delivery Jul 20 - 24. Only 4 left in stock - order soon. More Buying Choices.Final Price $ 489 49. each. You Save $60.50 with Mail-In Rebate. Ceiling-mounted forced air unit heater turns garages, barns, and workshops into heated workspaces. 80,000 BTUs heat up to 2,667 sq ft, or approximately a 3 or 4-car garage. Ships as natural gas; includes natural gas to propane conversion kit. View More Information.Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845. 4.0 out of 5 stars 8. $559.65 $ 559. 65. FREE delivery ... Features. Made of AL29-4C® super-ferritic stainless steel. Built-in high temp silcone gaskets for air tight seal. Built-in locking band to insure a secure fit (no hardware needed) UL1738 approved for category 3 venting applications. Limited lifetime warranty. Item # 465010, 4650103, 4650105, 4650107, 4650108.Mr. Heater F299201 Vent-Free Blower Accessory Kit (2016-present), Multi. $382.06. Mr. Heater 4 inch Stainless Steel Horizontal Vent Kit for Big Maxx MHU50 and MHU80 Unit Heaters. $149.99. Mr. Heater Vent Free Blower Fan Kit with 12Ft Regulator Accessory Kit Bundle. Add. $83.87. Mr. Heater 12 ft. Remote Propane Installation Kit for Vent Free Units. Buy Mr. Heater Category 3 Horizontal 4 in. Vent Kit at Tractor Supply Co. Great Customer Service. Mr. Heater Big Maxx Silver Wall-mounted Garage Heater Vent Kit. The category 1 vertical 4 in vent kit provides class 1 single wall B-vent ducting for Mr. Heater Big Maxx unit heaters, ranging from 50,000, 80,000, and 125,000 BTUs. Complies with US standard (UL441) and Canadian standard (S605). Designed for vertical installation only. Mr. Heater MHVFB20NGT Vent-Free 20,000 BTU Blue Flame Natural Gas Heater + Mr. Heater F299201 Vent-Free Blower Accessory Kit (2016 - present) 1. $27999. FREE delivery Jul 20 - 24. Only 4 left in stock - order soon. More Buying Choices.Item # 444941 Model # F102860 Mr. Heater Big Maxx 4-in Horizontal Residential Adapter, B-Vent Pipe, Vent Pipe, Elbow, Wall Thimble, Roof Flashing, Storm Collar, Vent Cap Out of Stock Overview Specifications Reviews Q&A Get Pricing and Availability Use Current LocationThe Z-Flex 4 Inch Horizontal Vent Kit in stainless steel contains the basic components required to vent a tankless water heater through an outside wall. A back-flow preventer is included for cold climates to help prevent freezing of the water heaters internal piping during cold weather. Includes: 4-in diam. Termination Hood, 4-in diam. x 90 Degree Elbow, 4-in diam. x 1-ft Straight Pipe, 4-in ... .