Lorient LAS1011 Firtree® Acoustic & Smoke Seal
 
The Lorient LAS1011 Firtree® is a high-performance acoustic perimeter seal designed to improve sound insulation while providing effective cold smoke protection around fire-rated doors. Manufactured with durable, flexible fins and a rigid PVC carrier, the seal offers a simple push-fit installation with minimal disruption to the door assembly. Its robust construction ensures long-lasting performance, making it ideal for both new installations and refurbishment projects.
 
Features & Benefits:
Co-extruded rigid PVC carrier with flexible sealing fins
Simple push-fit installation for quick fitting
Provides effective acoustic sealing and cold smoke containment
Tested durability of at least 100,000 operating cycles
UL Listed: R27972
Flexible 4mm fins help maintain an effective seal throughout the door's service life
 
Areas of Application:
Suitable for installation in the head and jambs of single and double-leaf fire doors. The LAS1011 may also be fitted at the threshold when used in conjunction with a suitable threshold plate.
 
Certification:
Certifire Approved: CF5179
 
Acoustic Performance:
Tested in accordance with BS EN ISO 140-3, achieving acoustic ratings of up to Rw 40dB.
 
Smoke Performance:
Tested to BS 476-31.1: 1983 and meets the smoke leakage requirements of BS 9999: 2017, helping to limit the passage of cold smoke through door perimeters.