Boss 334 Window and Door Gun Foam is a low-pressure, one-component polyurethane foam specially formulated for sealing around windows and doors without causing frame distortion. Its controlled expansion, excellent adhesion, and flexibility make it the perfect solution for precision air sealing in residential and commercial construction.

Key Features & Design

• Low-Expansion Formula: Minimizes pressure to prevent bowing or warping of window and door frames.
• Excellent Adhesion: Bonds to wood, vinyl, metal, concrete, and most construction materials.
• Flexible & Durable Seal: Maintains a tight seal while allowing for movement due to temperature and humidity changes.
• Gun-Grade Application: Use with a foam dispensing gun for better control, reduced waste, and cleaner application.
• Contractor-Friendly Packaging: Sold in a box of 12 – 24oz cans, ideal for volume use on large jobs.
• Applications: Window and door perimeters, rough openings, joints, and other low-expansion sealing needs

Specifications

• Brand: Boss
• Product Type: One-Component Polyurethane Foam
• Size: 24oz can
• Box Quantity: 12 Cans
• Applications: Window and door perimeters, rough openings, joints, and other low-expansion sealing needs

Achieve professional-grade, distortion-free seals with Boss 334 Window & Door Gun Foam—engineered for precision, performance, and reliability.