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PDB 411M – Mortised Drop Seal
Next Generation Drop Seal
- Only drop seal to offer a full aluminium sealing bar
- Uses patented, award-winning technology
- No threshold plate required
Acoustics – STC / Rw 52dB
Fire – 60 minutes to BS EN 1634-1:2014
Smoke to BS EN 1634-3:2004
Unique security benefit
Robust barrier for heat loss, light ingress & pests
Durability of 1.1M cycles without failure
Optional lengths available 300 mm to 1800 mm. Please note trimming length up to 100mm opposite side of actuator button.