The Master Flow 16 in. W x 8 in. L Rectangular Duct Cap is designed to cap or terminate a round or rectangular duct run in an HVAC system. This cap is made of galvanized steel and installs easily with sheet metal screws (not included). Seal seams in HVAC systems with code-approved mastic, sealant or duct tape (all sold separately).
Galvanized steel construction
Always seal seams with code approved mastic or sealant (or duct tape)
Install with sheet metal screws
Always insulate ductwork for greater system efficiency and comfort
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