Master Flow 10 in. x 3-1/4 in. Rectangular Stack Duct Cap

Master Flow 10 in. x 3-1/4 in. Rectangular Stack Duct Cap

• Seal seams with code-approved mastic, sealant or duct tape (sold separately)
• Use to cap off a round or rectangular duct run
• Install with sheet metal screws (not included)
• Fits most HVAC types for universal application
• Sturdy galvanized steel construction

Rectangular Stack Duct Caps, also called clean-out plugs or tee-caps, simply cap off a round or rectangular duct run. They are primarily designed to terminate or block off a rectangular duct run in HVAC systems. The duct caps are compatible with most HVAC systems and can be easily installed with sheet metal screws (sold separately).