Sound-insulating doors

Sound insulation to Rw = 56 dB (EN-ISO 140-3)

Merford sound-insulating doors are extremely suitable for locations where strict noise requirements apply and are intended for external and internal use.

Merford produces and supplies various types of sound-insulating doors. The special construction of the doors ensures optimal sound insulation. You can choose from a variety of attenuation values with the series starting at 41 dB and extending to 56 dB.

Deurtype	Rw-waarde	Ra pop	Ra house	Ra cinema
Merford MD56L	56 dB	50 dB	45 dB	46 dB
Merford MD55	55 dB	48 dB	38 dB	43 dB
Merford MN53	53 dB	42 dB	30 dB
Merford MF51*	51 dB	38 dB	25 dB	33 dB
Merford MFT*	49 dB	44 dB	35 dB
Merford MN47	47 dB	37 dB	28 dB
Merford MN41	41 dB	34 dB	26 dB

*A standard feature of the Merford MFT doors is their considerable fire-resistant qualities. Visit the page on sound-insulating fire doors for more information.

If you are looking for an even higher level of sound insulation, a tandem construction (two doors in close succession) can be used or doors can be installed in series to achieve values higher than 56 dB. Please contact us for more information.

	Fire resistance to 120 minutes(NEN 6069-1991 / EN 1634-1) (NEN 6069-1991 / EN 1634-1)
	Anti-panic (EN 179 / EN 1125)
	Burglar resistance in accordance with WK II and WK III (EN 1627)
	Ballistic resistance in accordance with class FB 4 (EN 1522-1)
	Suitability for ATEX environment

For more information, visit the page on combining features.

Sound-insulating door applications

Plant rooms (laboratories, emergency generator rooms, engine areas, testing areas)

Theatres and concert halls

Cinemas

Cafés and discotheques

Sports halls

Government buildings

Offices and conference spaces

Non-residential and non-civil building

Recording, TV and radio studios