Recessed U‑shaped Brush Seal Grundline PS70 71×120×4 mm for door and frame sealing

Grundline PS70 is a recessed U-shaped brush seal sized 71×120×4 mm for installation in door or frame grooves. Made from galvanized S235 steel with a 4 mm thickness, the seal creates a mechanical barrier that reduces drafts, dust and light penetration while helping to improve thermal and acoustic insulation. It is intended for discreet, durable sealing where the brush fits into a prepared slot in the door or frame.

Advantages

The product combines a rigid galvanized S235 steel profile with resilient brush filaments to provide durable separation between timber elements and the substrate and to prevent direct contact. The 4 mm thick steel construction ensures mechanical strength, while compatibility with common fasteners (wood screws ø10 mm or M10 bolts) simplifies installation. The recessed U-shape allows a low-profile finish that is suitable for both residential and commercial door applications.

Suitable for

• Sealing gaps between door leaf and frame in residential doors
• Sealing commercial or office doors to reduce drafts and dust
• Mounting in pre-cut grooves in wooden or metal frames
• Applications requiring separation of timber elements from concrete or other substrates

Key specifications

• Model: Grundline PS70
• Dimensions: 71 × 120 × 4 mm (profile cross-section and thickness; overall recessed U-shape)
• Material: galvanized S235 steel
• Steel thickness: 4 mm
• Compatible fasteners: wood screws ø10 mm or bolts M10
• MPN: 8148025
• EAN: 5907708148025

How to use

Prepare a groove in the door or frame sized to accept the recessed U-shaped profile. Position the Grundline PS70 brush seal into the prepared slot so the brush filaments contact the adjacent surface evenly. Fix the profile using suitable fasteners—wood screws ø10 mm into timber or M10 bolts where applicable—ensuring secure, even attachment along the length. Trim or adjust the seal length as required before final fastening.

Usage recommendations

For best performance, ensure the groove dimensions match the profile cross-section and fasteners are appropriate for the substrate. Verify brush contact along the full length to avoid light or air leaks. Use corrosion-resistant fasteners in exposed or humid environments.