DD-420S Threshold Seal

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
Available in 3 standard lengths 630, 930 and 1130mm
Optional end plates and cover plates

Technical
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Technical

Technical Information

Full fixing instructions supplied with the product.

Please contact our Technical Team if you require additional advice.

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

34dB can be achieved.

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Intumescent Fire Smoke
and Acoustic Seals

Telephone : +44 (0) 1252 929601

DD-420S Threshold Seal