Frost King R338H Foam Tape Weatherstripping 10ft X 3/8in

Product Description

The FROST KING R338H is a high-density rubber foam tape weatherstripping designed to seal gaps around doors, windows, and access panels against air infiltration, moisture, and drafts. The roll measures 10 feet long by 3/8 inches wide, making it a practical choice for sealing medium-width gaps in residential and light commercial applications. The foam construction compresses under contact pressure to form a consistent seal and recovers its shape through repeated open-and-close cycles. At 0.08 pounds, the roll is lightweight and easy to handle on the job. HVAC technicians, contractors, and building maintenance professionals commonly use foam tape weatherstripping to reduce conditioned-air loss and improve system efficiency at the building envelope.

This weatherstripping tape is suited for installation on door frames, window sashes, attic access hatches, and utility closet doors where a flexible, compressible seal is needed. The 3/8-inch width fits standard gap sizes found in residential construction and older commercial building stock. It is commonly applied as part of a building tightening scope or during routine HVAC maintenance when duct leakage or envelope losses are identified.

Key Features

• High-density rubber foam construction compresses to fill gaps and rebounds for repeated use
• 10-foot roll length provides coverage for multiple door or window openings per roll
• 3/8-inch width fits standard residential and light commercial gap sizes
• Lightweight at 0.08 pounds for easy field handling and transport
• Self-adhesive foam tape format allows fast installation without additional fasteners

Compatibility

Designed as a general-purpose foam tape weatherstripping replacement or new installation for standard door frames, window sashes, and access panels in residential and light commercial settings.

Installation Notes

Installation requires no specialized tools beyond a tape measure, utility knife, and a clean dry surface. Clean and dry the mounting surface thoroughly before applying the adhesive-backed foam to ensure proper adhesion. Apply firm, even hand pressure along the full length of the tape after placement. This product is typically installed by HVAC technicians, general contractors, or building maintenance personnel as part of envelope sealing or weatherization work.