Kerf-Set, Bulb Compression Weather Strip | Window and Door

Bulb‑Type, Compression, Kerf-Set Weatherstrip with Slip Coat Finish - 100' Roll in BEIGE. Kerf‑inserted barb leg design used to reduce friction and seals a casement window sash, awning sash, door panels and more. Key-Use Brands: Truth and EntryGard [windows] Marvin, Alpine, Andersen, Atrium, BF-Rich, Biltbest, Caradco, Cascade, Certainteed, Craftsman, Crestline, Croft, Eagle, Gerkin, Guardian, Hurd, JELD-WEN, Kolbe, Lincoln, Marvin, Milgard, Norandex, PGT, Peachtree, Pella, Ply-Gem, Quaker, Semco, Sierra-Pacific, Simonton, Traco, Weather-Shield, Therma-True, Harvey, Wenco and others.  

• Head and sill seals — installed along the top and bottom of the sash to compress against the frame when closed, preventing air and water infiltration.

• Meeting rail seals — used between upper and lower sashes of double‑hung windows to create a tight compression fit.

• Casement / Awning frame perimeters — often used around the frame where the sash presses inward, especially on the hinge side.

• Sliding patio doors — sometimes applied as a bulb seal along vertical stiles for smoother closure and reduced drag.

Upgrade your window and door performance with this premium bulb‑style compression weatherstrip, engineered for a tight, energy‑efficient seal. The flexible ¼‑inch diameter bulb compresses smoothly against the frame, while the kerf‑insert mounting leg ensures quick, secure installation in standard sash and frame grooves. Featuring a low‑friction slip‑coat surface, this seal reduces drag and wear on moving sashes—ideal for casement, double‑hung, and sliding window applications. The durable thermoplastic construction resists temperature extremes, moisture, and UV exposure, maintaining long‑term elasticity and protection against air and water infiltration. Perfect for home window restorations and replacements- this profile helps improve energy efficiency, noise reduction, and smooth operation.