Bestwing Seal is designed for control cold smoke and reduce sound wave bet the door edge and flame . It co-extruded rigid PVC casing with elastomeric fin.

A economical products, easy to install with self adhesive backing applicable for new or retrofit works. It reduce heat loss through a door and improve comfort levels by elimination cold draught ,in additional it stop ingress of airborne dust and insects.

Cyclic tested over 1,000,000 cycles to ensure the elastomeric fin maintain it original shape in meeting the performance. Tested to BS 476 Part 20 with a FD60s door assembly and Acoustic test to ASTM E90 with a acoustic doorset in conjunction with Sealz Auto Drop Seal achieved 40db.