Metal-Fab Storm Collars Are Designed To Seal Insulated Pipes Through Roof Flashing For Gas-Burning Venting Systems.
Metal-Fab Storm Collars made of stainless steel for long lasting durability. Corrosion-resistant for added reliability. Type is Storm Collar. Flue diameters are 3, 4 or 5 inch. UL rated for Category II, III and IV appliances.