Stainless Steel Stove Pipe Collar

The covers mask the space between chimney, roof or wall.
Covers are made of acid-resistant chrome-nickel steel sheets in grade 1.4404 according to DIN 17441 with a thickness of 0.5mm to 0.8mm.
They are resistant to the corrosive effects of acidic condensate formed during the combustion process. 
Protects opening around the chimney liner and roof from rain