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 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.

Max Drop

13mm

Data Sheets
Product Data Sheet

All orders are usually despatched within 24 hours of receiving cleared payment (Mon–Fri).

The above information is based on current test data, health and safety information and application instructions supplied by our suppliers and manufacturers of the products. It is supplied for guidance and to the best of our knowledge is true and accurate. Customers should satisfy themselves to the suitability of the products in its intended use and no guarantee is given or implied as the conditions of actual use are beyond our control. If in doubt the customer should consult the designer of the project or the local building control. 

Fire Stopping Shop, disclaim any liability for loss, damage or other expense which may arise from the use of this information, data or products refereed to and reserve the right to amend or change any details without notice. This statement does not affect your statuary rights.