Suitable for wooden or metal door assemblies.
Acoustically and smoke tested on proprietary fire doors
Aluminium body with self extinguishing PVC rubber coextruded seal and carrier.
Sound reduction of Rw 37 decibels
Suitable for new and retrofit
Screw fixing (screws suppied)
Anodised satin clear finish
Tested to 200,000 cycles.The ASDB/SM seal is an 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 face mounted applications. It is operated automatically by pressure against the door jamb on its adjustment block and seals when the door closes and retracts automatically when the door is opened.
Complies with Approved Documents E and M for energy saving and DDA access requirements.


Can be fitted inside (lock side using bumper provided) or outside of the door (non lock side)
Tested for durability 200,000 cycles completed without failure for fire rated smoke doors.
14mm maximum drop, Seal drops on hinge side before lock side.
Suitable for all types of swing doors.
Min/Max Gap: 3mm-14mm.
Seal Lengths: 330mm, 430mm, 530mm, 630mm, 730mm, 830mm, 930mm, 1030mm, 1130mm, 1230mm.
Seal can be cut back by 95mm.
Anodised satin clear finish.
