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Mr. Heater Category 1 Vertical 6 in Vent Kit for Big Maxx Heaters

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New  $226.26
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Product details

Management number 252235676 Release Date 2026/10/01 List Price $90.50 Model Number 252235676
Category

The category 1 vertical 6-in vent kit provides class 1 single wall B-vent ducting for Mr. Heater Big Maxx and Heatstar unit heaters, ranging from 250,000 to 400,000 BTU. Designed for vertical installation only. Kit includes a 6-in gas vent top, a storm collar, an adjustable roof flashing, a 6-in by 26-in B-vent pipe, two 6-in by 24-in 26-GA pipes, a firestop support plate assembly, and a 4-in to 6-in adapter (if needed). Other parts may be required for your specific installation needs. Please check and adhere to all state and local codes before installation.

  • Kit includes a 6-in gas vent top, a storm collar, an adjustable roof flashing, a 6-in by 26-in B-vent pipe, two 6-in by 24-in 26-GA pipes, a firestop support plate assembly, and a 4-in to 6-in adapter (if needed)
  • Single and double wall venting pipes
  • Additional parts may be needed to meet local building codes
  • Adjustable roof flashing
  • This kit provides the pieces needed for an average installation - additional pieces may be needed
  • Compatible with MHU50, MHU80, MHU125, HSU50, HSU80, and HSU125
Brand Mr. Heater
Material Plastic
Size 6"
Color Silver
Duct size 6 in
Thickness 6 in
Features Adjustable
Model F102849
Ducting type Round Duct
Product net content uom Each
Product net content parent 1 Each
Assembled product weight 16 oz
Accessories included 6-in gas vent top, a storm collar, an adjustable roof flashing, a 6-in by 26-in B-vent pipe, two 6-in by 24-in 26-GA pipes, a firestop support plate assembly, and a 4-in to 6-in adapter

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