M-d Building Products 50005 Ac Weatherstrip Foam 42 in Beige

Product Description

The M-D BUILDING PRODUCTS 50005 is a high-density foam weatherstrip designed for use with window-mounted air conditioning units. Measuring 42 inches long, 1.375 inches wide, and 0.5 inches tall, this strip wedges between the window sash and the AC unit frame to block air infiltration, reduce energy loss, and minimize dust and insect intrusion. HVAC technicians and window AC installers use this strip as a quick, low-cost sealing solution during unit installation or seasonal service calls. The foam compresses to fill irregular gaps and holds its shape over repeated use.

This weatherstrip is suited for residential window AC installations where the gap between the sliding window sash and the unit chassis creates an air bypass. It is particularly useful in single- and double-hung window configurations where the sash closes against the top or sides of the unit. The beige color blends with common window frame finishes. Sold as a single 42-inch strip, it can be trimmed to length for shorter window openings.

Key Features

• High-density foam construction compresses to fill irregular gaps around window AC units
• 42-inch length accommodates a wide range of standard window widths and can be cut to fit
• 1.375-inch width and 0.5-inch height sized to fit between sash and unit chassis
• Beige finish blends with common interior window trim and frame colors
• Lightweight at 0.2 pounds for easy handling during installation

Compatibility

Designed as a general-purpose foam seal for residential window-mounted air conditioning units where a flexible, compressible strip is needed to close the gap between the window sash and the AC unit frame.

Installation Notes

Power down and unplug the window AC unit before beginning any sealing work. Press the foam strip firmly into the gap between the window sash and the unit chassis, ensuring full contact along the length of the strip. Trim excess material with a utility knife or scissors for a clean fit. No adhesive or special tools are required in most installations, though foam-compatible adhesive tape may be used for added retention in high-vibration environments.

Technical Specifications

• Length: 42 inches
• Width: 1.375 inches
• Height: 0.5 inches
• Material: High-density foam
• Color: Beige
• Weight: 0.2 pounds
• Sold As: Each
• UPC: 00043374500059

Standard Information

• Brand: M-D BUILDING PRODUCTS
• Manufacturer Part Number: 50005