LAS8001 si Drop Seal


A slimline, mortised automatic drop seal. It features a high efficiency mechanism, which lifts the seal clear of the floor as soon as the door is opened by a few millimetres; resulting in lower door operating forces. Requires no power connection. Self-levelling on uneven floors; seal height can be adjusted independently of fixing screws.

View the LAS8001 si drop seal animation.


System specification

Test evidence Acoustic: BS EN ISO 10140-2:2010 (up to Rw 39dB). Smoke: BS 476-31.1: 1983 at ambient temperature; BS EN 1634-3:2004 at ambient and medium temperature; effective smoke seal up to 200°C. Fire: BS 476-20/22:1987 & BS EN 1634-1:2014. Durability: 100,000 cycles.
Performance Meets smoke requirement: BS 9999: 2017
LocationSingle swing, single + double leaf doors. For use on both right + left handed doors
Min/max gap size1mm/13mm
Seal materialGrey or black silicone rubber
Standard FinishSilver anodised aluminium with silver end plates, and grey silicone rubber gasket as standard.
Non-standard finish Silver anodised aluminium with bronze end plates, and black silicone rubber gasket are subject to non-standard charges and additional lead times.
Standard lengths335mm, 435mm, 535mm, 635mm, 735mm, 835mm, 935mm, 1035mm, 1135mm + 1235mm. Sizes above 1235mm are available on request. Note: Each length can be cut back to the next size down. The 335mm can be cut back to 255mm
AdjustmentSelf-levelling on uneven surfaces
Durability1 million cycles