Dutch masters of steel since 1667
Dutch Masters of Steel since 1667
MHB SL30-ISO 2020 US - Tx ranch L
MHB SL30-ISO 2016 USA - Dover WD - Baltimore county, Maryland steel door
MHB SL30-ISO 2018 NL De Lier Big Green Egg steel doors
MHB SL30-ISO 2020 NL PV Recreatiewoning Haren steel lock case door

Ultra-slim steel doors

MHB’s steel doors are the most exclusive and aesthetically pleasing options for your project. They are handcrafted in our in-house facilities from start to finish, resulting in exceptional steel frames that are uniquely durable and ultra-slim with a 1 15⁄16″ profile. We strive for aesthetic perfection and the highest quality standards in our products. To ensure that your steel doors are impeccable, we carefully monitor our production practices from start to finish.


Last a lifetime

All our steel doors are weatherproofed up to Class 6A – 600 Pa following the NEN-EN 12208 & NFRC standard. They also have unparalleled thermal insulation thanks to our SL30-ISO® profile system. We incorporate fully double rubber seals and use a special wet seal for glazing, which provides maximum comfort with minimal maintenance. Our doors are completed with a Qualisteelcoat surface treatment to make them last for more than a lifetime.

MHB steel doors in the big green egg main office building

MHB offers an extensive selection of door configurations, handles and finishes. This allows you to create one-of-a-kind doors that meet any need. Our unique SL30-ISO® solid steel profile system allows our steel doors to be available in large standard dimensions, and we can even design and test larger doors for specific projects. We guarantee swift on-site installation, with size deviations of no more than 1⁄32″.


Unique configurations

Our steel doors are available with five locking configurations: lock case doors, floating lock case doors, French doors, lock mullion doors, and partial lock mullion doors. This allows you to choose the configuration that best suits your needs.

3d rendering front view of MHB steel floating lock case doors

MHB Floating lock case steel doors

MHB’s floating lock case doors offer maximum security and aesthetic beauty. With ultra-slim 1 3⁄16” sightlines and beautifully concealed lock cases, these doors allow an abundance of natural light to enter. Our floating lock case doors are based on a centuries-old design by a Swiss master blacksmith and are made possible by our ultra-slim SL30-ISO® profile system. Their construction requires expert craftsmanship, including advanced laser cutting techniques and careful placement of the glass around the lock case. This results in a truly unique and elegant door.

MHB Lock case steel doors

MHB’s lock case doors allow you to create a modernist architectural statement. These iconic and robust doors combine the strength of steel with our renowned ultra-slim SL30-ISO® profile system. Handcrafted by our skilled craftsmen, these doors are guaranteed to be of the highest quality and attention to detail.

3d rendering front view of MHB steel lock case doors large
3d rendering front view of MHB steel partial lock mullion doors

MHB Partial lock mullion steel doors

MHB’s steel partial lock mullion door is the perfect solution for those seeking a hybrid door. Combining the strengths of our full range of door designs, this door offers exceptional freedom of design and customization. Its ultra-slim sightlines, excellent insulation, and optimal security make it the ideal choice for modern architecture.

MHB French doors

If you want seamless access to your indoor and outdoor living spaces, MHB’s French doors are the ultra-slim solution. Our exclusive MHB WML locking system ensures secure locking, thanks to its design that fits perfectly with our ultra-slim patented profile systems. In addition, the excellent insulating properties of our French doors maximize your comfort as well as your view.

3d rendering front view of MHB steel french doors
3d rendering front view of MHB steel lock mullion doors

MHB Lock mullion steel doors

MHB’s lock mullion door combines our distinctive ultra-slim design with a high-tech multipoint locking system. Our skilled craftsmen have engineered this door to be both aesthetically pleasing and highly secure. It is also suitable for panic locks, and its SL30-ISO® profiles make it fully weatherproof. This door offers the perfect blend of style and security.


MHB Floating lock case door product sheet
MHB Lock case door product sheet
MHB Partial lock mullion door product sheet
MHB French door product sheet
MHB Folding door product sheet
MHB Lock mullion door product sheet
MHB Pivot door product sheet
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Dutch Masters of Steel since 1667

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