They can be used for flue gas, ventilation ducts, etc. Designed to protect pipes from precipitation, as well as to increase traction.
Chimney Cowl Flue Liner Rain Cap Duct Plug Stove Pipe Rain Cover
Chimney Flue Liner Rain Cap with Clip Duct Cowl Protector Pipe Pot Cover
Chimney Spark Arrestor Flue Liner Rain Cap Cowl Duct Pipe Cover Protector
Flue Liner Rain Cap Chimney Cowl Duct Pot Pipe Cover
Stainless Steel Chimney Cowl Flue Liner Rain Cover Protector Stove Cap Pipe Top
Flexible Flue Liner Rain Cap Terminal for Chimney Flue 5"125mm or 6" 150mm
