Full-height doors that sit flush with the wall, with no casing, no visible hinges and no visible strike plate. We design the whole door package with you and your architect, create drawings for your construction documents, and support your builder until the last door is hung.


A full-height Dorsis Fortius filomuro door goes all the way to the ceiling. It's an inexpensive way to make every room look instantly taller.

Concealed door frame is powder-coated in a chosen RAL color. Go with white for white doors, or gray/black for veneer doors.
Concealed swing door frame includes a sound-insulating silicone gasket. Available in white, gray, or black.

Door frames are equipped with 3-way adjustable Anselmi or Simonswerk Tectus concealed hinges. White, gray, or black.

Bring light to your hallway. Our doors can accommodate a set of glass lites. Available in clear, frosted/satin, bronze, or gray glass.

Choose from one of our 1000+ door handles and door pulls, or go with the invisible No-Ha handle.

Enjoy high-end design with an invisible strike plate and a flush magnetic latch. The latch bolt stays retracted until the door fully closes.

Close the gap between the door and the floor to improve sound and temperature control. An ideal option for mechanical rooms.
See the frameless Dorsis Fortius filomuro interior doors featured in high-end residential projects across North America and around the world.
Full-height doors as well as floor-to-ceiling windows have been a go-to choice for leading modernist architects like Ludwig Mies Van der Rohe. Flush interior doors with concealed door frames are the pinnacle of modern architecture in the United States, a trend pioneered in Europe.
We manufacture custom frameless doors as part of our exclusive door system which includes trimless pocket doors and flush recessed baseboards.


Each panel is a 5-ply (painted doors) or 7-ply (veneer door) solid-core door sandwich. Engineered to support tall doors up to 11'-6" without warping and to accommodate additional cladding and custom paneling.
The skin of the Dorsis door is an ultra smooth ¼" (6 mm) MDF board providing durable basis for high-end smooth finish – which you won't find in common dual MDF assembly solid core doors.
Dorsis door slabs use two layers of lightweight MDF bonded to a solid-core base to ensure excellent soundproofing, so you don't hear noise.
Dorsis provides painted doors because site-painted doors never match the quality of a factory finish. For most projects, we use 20% gloss, with an option for high gloss. We use a multistep coating process with low-VOC, water-based paints.
Tall Dorsis door slabs stay flush with the wall thanks to the hidden, adjustable door straightener. If the door goes out of plane, you can adjust the door straightener to bring it back to a perfectly flush position.
Dorsis Fortius offers one of the widest ranges of frameless door installation options: standard swing doors; double doors (active/active or active/passive); full-height doors with a ceiling-recessed header for light and sound insulation; standard full-height doors; or custom angled doors. Also available: Dorsis Fortius Frameless with a solid or glass transom.

Want to create a hidden door that aligns with paneling? The Fortius Frameless Door System offers several options for adding wood wall paneling, cladding, or slat panel solutions.
The engineering prowess behind this concealed door allows for virtually limitless interior design outcomes.


Flexible in any site condition
The Fortius hidden door frame is flexible - it can be installed in all common wall assemblies, including wood-stud and steel-stud framing. The minimum wall thickness is 4"; there is no maximum limit.
You can easily integrate the Fortius concealed door frame with the Dorsis Linus flush baseboard.
A pre-assembled, perfectly square Fortius door frame is mounted to the rough opening, a much simpler installation method than alternatives.
On the flush side, the concealed door frame accepts a ½" drywall sheet. A combination with ⅝" drywall is possible.
On the interior side, the concealed door jamb allows the use of ½" or ⅝" drywall, or wall panels.


Exterior View
Interior View
Highly customizable. Perfected for every project.
Residential



Residential & Commercial (15 FINISHES)





Magnetic Locks




RAL Matte powder coating (215 color options)
Standard Paint - RAL Glossy / Matt (215 COLORS)
Premium Paint - Benjamin Moore
Wood veneers - Dorsis Signature Collection
Engineered wood veneers - Alpi Collection
HPL Laminates - Egger Stone Collection & Laminam
Size, Style & Finish. Made To Order.
Shop drawings for inclusion in Construction Documents (CD) available on request for each project.
Dorsis Fortius EI30 is a fire-rated frameless door with a 30-minute rating EI/EW 30 DP3-C (European standard).