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            Combining features

            Combine multiple features in a single door!

            Every situation is unique and demands its own solution. At Merford, you select only those features that fit your specific situation. Most door models are characterised by fire resistance or sound insulation features or by a combination of the two. The table below contains a summary of the door models and the associated performance ratings.

            Door model




            Sound Insulation



            30 min.

            60 min.


            Rw value




            Merford MD56L





            56 dB




            Merford MD55





            55 dB




            Merford MN53





            53 dB




            Merford MF51


            Standard 60 m. (NEN 6069:1991)


            51 dB




            Merford MFT


            Standard 120 m. (EN 1634-1)


            49 dB




            Merford MN47





            47 dB




            Merford MN41





            41 dB




            Merford EW30


            Standard 30 min. (EN 1634-1, EI-2)


            Optional sound insulation to Rw approx. 37 dB (EN 20140/717-1)

            Merford EW60


            Standard 60 min. (EN 1634-1, EI-2 or 120 m. (EN 1634-1) fire resistance


            Optional sound insulation to Rw approx. 33 dB (EN 2014/717-1)

            Most of the above door models can be combined with several of the features listed below. For example you can combine the following features:

            Anti Paniek Panic bar (EN 179/EN 1125)
            Anti Inbraak Burglar-resistant in accordance with Resistance Class II and III (EN 1627)
            Kogelwerend Bullet-resistant in accordance with Class FB4 (EN 1522-1)
            Atex Suitable for use in ATEX environments

            Unique Combinations

            • You can combine burglar-resistance with an escape door function in the combination door. It is therefore no longer necessary to make concessions in relation to safety and burglar-resistance. Read more about this unique combination on the burglar-resistant escape doors page.
            • The MFT model sound-insulating fire door is 120 minutes fire resistant in accordance with the new European fire standard (EN 1634-1), which will go into effect throughout all of Europe. In addition, this door has a high sound insulation rating of 49 dB.

            We would be pleased to advise you concerning additional possibilities in relation to available features and customisation. Do not hesitate to contact us for additional information.

            Relevant cases

            • Barco Kortrijk
              Barco new head office: special doors for a special building

              Classrooms, an auditorium, demonstration rooms, a restaurant, meeting rooms and office areas, and an exceptional circular architecture.Barco’s new, multifunctional head office in Kortrijk, Belgium, presented many challenges for all involved parties. Merford supplied custom-made doors that combined multiple requirements relating to design and functionality.

            • Endemol
              XL sound-insulating doors Endemol studios

              Endemol is an Amsterdam-based production company that produces multiplatform entertainment content, including numerous well-known television programmes. Its premises include a number of studios in which various soap operas and sports programmes are recorded. Merford recently fitted the studios with new extra-large sound-insulating doors.