This is an 18" CPVC Duct Cap with belled end. CPVC duct is tough and used for industrial and instutitional applications involving corrosive fume collection, transfer, and reclamation. PVC Fittings Direct has the fittings and pipe you need at low prices.
Size: 18"
Material: CPVC
End Type: Belled
Max Temperature: 200F
Standards: ASTM D-1784 Cell Class 23447