PDB 411M – Mortised Drop Seal

Next Generation Drop Seal

To request a quote, please contact us stating quantity and drop seal length and our team will be in touch within 24 hours.  Alternatively, please call our sales team directly on 0800 6890 698.

  • 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

Standard Lengths

  • 435mm
  • 535mm
  • 635mm
  • 735mm
  • 835mm
  • 935mm
  • 1035mm

Optional Lengths

Optional lengths available 300 mm to 1800 mm.  Please note trimming length up to 100mm opposite side of actuator button.