Fire and smoke doors
We produce every one of our models in a fire-rated and smoke-tight version — from design interior doors to doors for demanding public spaces.
- Fire resistance
- EI30 / EI45
- Cycle test
- C5 · 200 000
- Height
- up to 3 m
Door manufacturing since 1999
Doors that hold up in every project.
Bespoke fire, security and soundproof doors — in a design that lives up to demanding architecture.
Project: Sportovní hala Ostrava
EI45
Fire rating
RC3
Security class
Rw 42 dB
Acoustic reduction
1999
Manufacturing since
About
Functional and design doors from our own production
Internal Door is a guarantee of specialisation in fire-rated and security doors — and in design doors at the same time. Step by step we are becoming one of the most qualified door manufacturers on the national and international stage.
We continually develop new fire, acoustic and security constructions that meet the most demanding requirements of your projects. Everyone on our team takes part not only in production but also in development and testing in laboratories in the Czech Republic and abroad.
By function
Performance built into the door
Fire resistance, noise reduction and resistance to break-ins — all in a single structure if needed. We verify the parameters by testing, not just on paper.
Soundproof doors
Acoustic doors protect against noise from outside and in — in offices, clinics, schools and flats. We always guarantee them as a complete set of door leaf and frame.
- Reduction
- Rw 32 / 38 / 42 dB
- Supply
- leaf + frame
- Combination
- EI45 · RC3
Security doors
A robust structure that resists unauthorised entry. For museums, banks, archives, sensitive office spaces and private homes.
- Resistance
- RC3
- Structure
- reinforced leaf
- Combination
- EI45 · Rw 42 dB
By function
EI45 RC3 Rw 42 dB
Fire resistance, noise reduction and resistance to break-ins — all in a single structure if needed. We verify the parameters by testing, not just on paper.
By model & design
Design that holds the line
From hidden frames with a clean shadow gap to real wood and historic replicas — you choose the finish.
Hidden door frames
Aluminium profile, shadow gap, clean line
Veneered doors
Real wood — oak, wenge, ebony
Glass doors
Hinged, sliding and pocket versions
Alt Wien — historic replicas
Panelled doors with ornamental hardware
Durable HPL doors
High-pressure laminate, up to a thousand decors
Doors in a RAL shade
Spray coating in any RAL colour
Why Internal Door
A manufacturer for any brief
Our own production
We are door makers and we know the craft — from development and engineering to the final finish.
Made to measure
We build what others cannot. Every door is an original, even made to a template.
Lab-verified
We test our doors in laboratories in the Czech Republic and abroad — not on paper, but in cycles.
Historic replicas
Historic design with the parameters of today — certified EI45 and RC3.
Where we deliver
- Offices
- Apartment buildings
- Schools
- Houses & villas
- Retail centres
- Hotels
- Hospitals
- Industry
- Residences
Request bespoke doors
Send us your brief or give us a call. We'll prepare a solution and a quote tailored to your project.