Pemko Q103D Encased Foam Kerf-In Weatherstrip — 3/8 In. Reach, Dark Brown, 97 In.

The Pemko Q103D is a professional-grade kerf-in encased foam weatherstrip designed to seal the gap between a door and its stop. This single 97-inch piece installs directly into a saw-kerf routed into the door stop, where its encased foam bulb compresses against the door face to create a consistent, draft-resistant seal. Finished in Dark Brown, the Q103D blends cleanly with dark-stained wood frames and door stops. Also known as a kerf-in door stop seal or foam bulb weatherstrip, this Pemko product is a trusted solution for reducing air infiltration, dust, light gaps, and sound transmission around door perimeters.

Institutional Grade Features & Benefits

• Kerf-In Installation: Snaps securely into a standard saw-kerf cut in the door stop — no adhesive, fasteners, or special tools required beyond a kerf saw pass.
• Encased Foam Bulb Seal: The foam core is encased in a protective outer skin that maintains shape under repeated door cycles, delivering long-term compression performance and consistent gap sealing.
• 3/8 In. Reach: The 3/8-inch bulb projection accommodates typical door-to-stop gaps, ensuring reliable contact and a tight perimeter seal without over-compressing.
• Full-Length 97-Inch Single Piece: At 97 inches, one piece covers a standard full-height door stop run — top and both sides — minimizing seams and reducing installation time.
• Dark Brown Finish: Color-matched for dark wood or dark-painted door frames, maintaining a clean, finished appearance on the interior face of the door stop.
• Reduces Air, Dust, Light, and Sound Infiltration: The compressed foam bulb creates a physical barrier along the door perimeter, improving comfort and energy performance in the opening.
• Pemko Quality: Pemko is a recognized industry leader in door sealing and gasketing solutions, supplying weatherstrip products to commercial, institutional, and residential projects worldwide.

Technical Specifications

• Brand: Pemko
• Part Number: Q103D
• Part Type: Kerf-In Weatherstrip
• Seal Type: Encased Foam Bulb
• Installation Method: Saw-kerf (kerf-in)
• Reach: 3/8 inch
• Length: 97 inches (single piece)
• Color / Finish: Dark Brown

Technical Details