Thermwell AC41WA Ac Foam Weather Strip 1.5x0.5x40 in White

Product Description

The THERMWELL AC41WA is a flexible foam weather-stripping strip designed for sealing the gaps around window-mounted air conditioning units. Measuring 1.5 inches wide by 0.5 inches thick by 40 inches long, this white compressible strip conforms to irregular frame surfaces to block air infiltration, insects, and dust from passing around the window A/C chassis. The resilient foam material compresses under load and rebounds to maintain a consistent seal over repeated seasonal installations and removals. HVAC technicians and home service professionals use this strip as a finishing step in window A/C installations where a tight perimeter seal is required for unit efficiency and indoor air quality.

The AC41WA is suited for residential window air conditioner installations where the gap between the unit chassis and the window frame or accordion side panels needs to be sealed. It is applied along the perimeter of the unit where the chassis contacts the window sill, side panels, or upper sash. The 40-inch length provides sufficient coverage for most standard residential window A/C units. The white color matches common window trim and interior finishes in residential settings.

Key Features

• Flexible, compressible foam construction conforms to uneven frame surfaces for a consistent perimeter seal
• Blocks air leakage, insects, and dust around window A/C unit chassis
• 40-inch length accommodates standard residential window air conditioner installations
• 0.5-inch thickness provides adequate compression depth for typical chassis-to-frame gaps
• White finish blends with standard window trim and interior finishes
• Designed for seasonal installation and removal without permanent adhesive damage

Compatibility

Designed as an OEM-style weather-stripping solution for use with standard residential window air conditioner units where foam gap sealing is required around the chassis perimeter.

Installation Notes

Installation is typically performed by an HVAC technician or qualified service professional as part of a window A/C unit seasonal setup. Power down and unplug the air conditioning unit before applying weather stripping around the chassis. Clean and dry all contact surfaces before applying the foam strip to ensure proper adhesion and compression. Do not stretch the strip during application, as this reduces compressed thickness and seal effectiveness.