Thermwell OS6H Outlet Sealer Foam 6 Pack

Product Description

The THERMWELL OS6H is a white, closed cell foam outlet sealer designed to reduce air infiltration and heat loss through standard electrical outlet and switch plate openings. Each pack contains six pre-cut foam gaskets that install behind outlet covers to block drafts in exterior walls. Licensed electricians and energy auditors commonly install these as part of a broader air-sealing or weatherization scope. UL and CSA approval confirms the foam meets established safety standards for use around electrical components.

These foam outlet sealers are suited for residential and light commercial weatherization projects. They are typically installed on exterior walls where unconditioned air can pass through outlet and switch box cavities. The closed cell foam construction provides a compressible, form-fitting seal that conforms to the outlet cover when the cover plate is fastened down.

Key Features

• Closed cell foam construction provides an effective draft barrier around outlet and switch plate openings
• White finish blends with standard outlet cover plates
• UL and CSA approved for safe use in electrical outlet applications
• Six sealers per pack for efficient multi-outlet installations
• Pre-cut design requires no trimming for standard outlet and switch plate sizes

Compatibility

Designed as an OEM-style replacement gasket for standard residential electrical outlet and switch plate openings.

Installation Notes

Installation is typically performed by electricians or weatherization contractors during air-sealing work. Always turn off power to the circuit at the breaker panel before removing any outlet or switch cover plate. Remove the cover plate, place the foam gasket over the outlet or switch, then reinstall the cover plate. No special tools are required beyond a standard flathead or Phillips screwdriver.