DD420S/730 Mann McGowan 730mm Mortice Drop Down Seal (34dB)

Description

Mann McGowan DD-420S, is a robust threshold seal providing acoustic, cold smoke and environmental sealing when used in conjunction with suitable doors.

DD-420S has achieved a 30 minute fire rating when tested to BS 476 pt. 22 1987.

Acoustic values of upto 34dB can be achieved depending on door type selected.

High quality aluminium threshold seal

Seals gaps up to 13mm

Simple to fit with slide and click mechanism

Easy to adjust using slot head screwdriver

30 minute fire rating

Excellent noise-reducing performance up to 34dB

Optional end plates and cover plates

Performance

DD-420S has been assessed to BS 476 Part 22 for use on FD30 Door sets.

DD-420S has been successfully tested to BS EN 1634-3 for cold smoke sealing (air leakage).

Cycling test: 200,000 opening and closing cycles.

Acoustic performance test

Acoustic tests have been conducted in accordance with the standards listed below:

BS-EN 10140-1

BS-EN 10140-2