Metal Fab

4 in. Type B Gas Vent Storm Collar

Part #M4MSC  |  Manufacturer Part #4MSC


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Product Details

  • Approved for use with category 1 gas furnaces, heaters and boilers
  • Double wall design enables use at close clearance to combustibles
  • Design eliminates sharp edges by hemming the flue and casing
  • Features positive twist lock, tool-free assembly and disassembly


Diameter: 4 in

Material: Stainless Steel

Type: MMSC