Astro ASDB/SM SEAL is a automatic door bottom seal which is spring loaded to lift clear of the floor as soon as the door leaf is opened by a few millimetres.

An acoustically designed seal for surface mounted applications. It is operated automatically by pressure against the door jamb on its plunger and seals when the door closes and retracts automatically when the door is opened.

Can be fitted on the internal side of the door using the frame to activate the plunger or externally using the bumper provided.

Click here for the rebated door bottom seal version (for timber only doors).

14mm maximum drop, Seal drops on plunger side first.

Suitable for all types of swing doors.

Smoke Testing was conducted to BS EN 1634-3: 2004 smoke control tests for door and shutter assemblies, openable windows and elements of building hardware – Part 3: Smoke control test for door and shutter assemblies.

Noise Reduction Index: Rw up to Rw 37dB*

Maximum Drop: 14mm.

For data sheets, test reports and more information please copy and paste this link into your browser: https://www.astroflame.com/door-bottom-seals_surface_mounted.html