A slimline, face-fixed or semi-mortised automatic drop seal.
Self-levelling on uneven floors; seal height can be adjusted independently of fixing screws.

Meets smoke requirement: BS 9999: 2017
Smoke: BS 476-31.1: 1983 at ambient temperature.
Acoustic: BS EN ISO 10140-2: 2010 (up to Rw 33dB)

Can be cut back to 255mm