The product consists of a fire-proof expansion strip and a metal shell (made of carbon steel spray paint, stainless steel or galvanized sheet), which is used for fire-proof plugging of from following variety of outer diameter plastic pipes (made of PVC, CPVC, ABS, FRPP)

1.5 inch（50mm）

2.0 inch（63mm）

3.0 inch（90mm）

4.0 inch（110mm）

Note: Fire protection time 3h, UL1479 certified