The exterior aluminium door in this system features an aluminium threshold with an integrated thermal break as standard. Aluminium doors are known for their strength, durability, and low maintenance, as well as their modern, sleek appearance. This door stands out for its excellent thermal insulation and long-lasting performance, making it an ideal choice for energy-efficient buildings.
Aluminium Doors
Find the perfect colour for your aluminium doors to match your design vision.
Choose from over 200 RAL colours for a durable, sleek aluminium finish—available in matte, satin, or gloss. Whether you want a striking modern statement or a subtle, classic look, our extensive palette allows you to customise your aluminium doors to perfectly suit your home’s style.
Colors for every taste
Handles
Our handles made of PVC, aluminium, and wood combine elegant design, functionality, and long-lasting quality. With a wide range of colour options, they can be seamlessly matched to your windows, doors, or overall building style for a harmonious look.


















We guarantee top quality, a wide range of colour options, and solutions tailored to meet even the most demanding expectations.
Door structures
Modern architecture often demands doors in various sizes, shapes, and specifications. These elements influence not only the door’s appearance but also its strength, stability, and longevity. In Chestnut innovations doors, the use of spacers enhances rigidity while allowing for a unique, customized design.

Spacers - Example #1

Spacers - Example #2

Spacers - Example #3

Spacers - Example #4

Spacers - Example #5

Spacers - Example #6

Spacers - Example #7

Spacers - Example #8

Spacers - Example #9

Spacers - Example #10

Spacers - Example #11

Spacers - Example #12

Spacers - Example #13

Spacers - Example #14

Spacers - Example #15

Spacers - Example #16

Spacers - Example #17

Spacers - Example #18

Spacers - Example #19

Spacers - Example #20
Compare products
| Technical data |
MB-86N SI
|
MB-79N SI+
|
MB-70HI
|
MB-70
|
MB-45
|
MB-78EI Fire-Doors
|
PIVOT
|
|---|---|---|---|---|---|---|---|
| Number of chambers | 3 |
3 |
3 |
3 |
1 |
3 |
- |
| Installation depth | 77 mm |
70 mm |
70 mm |
70 mm |
45 mm |
78 mm |
77 mm |
| Number of gaskets | 2 |
3 |
2 |
2 |
2 |
2 |
- |
| Thermal transmittance |
Ud = 0,83 W/(m2K)* *Single-leaf door measuring 1,100x2,300 mm: for the WASHINGTON ZERO door model – using a both-side aligned panel. |
Uw = 0.85 W/(m2K)* *Single-leaf door with dimensions 1100x2300 mm, glazing T4/U18/FL4/U18/T4 filled with argon, with Swisspacer spacer – calculation method. |
Uw = 1,2 W/(m2K)* *Single-leaf door measuring 1,100x2,300 mm: glass with argon and the Swisspacer Ultimate TMP4/U18/FL4/U18/TMP4 spacer bar. |
Uw = 1.3 W/(m2K)* *Single-leaf door measuring 1,100x2,300 mm: glass with argon and the Swisspacer Ultimate TMP4/U18/FL4/U18/TMP4 spacer bar. |
- |
Ud = 1.6 W/(m2K)* |
- |
| Infills with a thickness of | 15-60 mm glass, batch panel 36 mm, overlay panel 77 mm |
22.5-49.5 mm glass, batch panel 36 mm |
14.5-53.5 mm glass, batch panel 36 mm |
14.5-53.5 mm glass, batch panel 36 mm |
6-24.5 mm glass |
15-60 mm glass |
- |
MB-86N SI
Number of chambers: 3
Installation depth: 77 mm
Number of gaskets: 2
Thermal transmittance: Ud = 0,83 W/(m²K)
*Single-leaf door measuring 1,100x2,300 mm: for the WASHINGTON ZERO door model – using a both-side aligned panel.
Infills with a thickness of: 15-60 mm glass, batch panel 36 mm, overlay panel 77 mm
MB-79N SI+
Number of chambers: 3
Installation depth: 70 mm
Number of gaskets: 3
Thermal transmittance: Uw = 0.85 W/(m²K)
*Single-leaf door 1100x2300 mm, glazing T4/U18/FL4/U18/T4 filled with argon, with Swisspacer spacer – calculation method.
Infills with a thickness of: 22.5-49.5 mm glass, batch panel 36 mm
MB-70HI
Number of chambers: 3
Installation depth: 70 mm
Number of gaskets: 2
Thermal transmittance: Uw = 1,2 W/(m²K)
*Single-leaf door 1100x2300 mm: glass with argon and Swisspacer Ultimate TMP4/U18/FL4/U18/TMP4 spacer bar.
Infills with a thickness of: 14.5-53.5 mm glass, batch panel 36 mm
MB-70
Number of chambers: 3
Installation depth: 70 mm
Number of gaskets: 2
Thermal transmittance: Uw = 1,3 W/(m²K)
*Single-leaf door 1100x2300 mm: glass with argon and Swisspacer Ultimate TMP4/U18/FL4/U18/TMP4 spacer bar.
Infills with a thickness of: 14.5-53.5 mm glass, batch panel 36 mm
MB-45
Number of chambers: 1
Installation depth: 45 mm
Number of gaskets: 2
Thermal transmittance: -
Infills with a thickness of: 6-24.5 mm glass
MB-78EI Fire-Doors
Number of chambers: 3
Installation depth: 78 mm
Number of gaskets: 2
Thermal transmittance: Ud = 1.6 W/(m²K)
Infills with a thickness of: 15-60 mm glass
PIVOT
Number of chambers: -
Installation depth: 77 mm
Number of gaskets: -
Thermal transmittance: -
Infills with a thickness of: -
GLASS
We offer a wide selection of glass for windows and doors. All products meet high energy efficiency and sound insulation standards. Our range includes laminated (safe and burglar-resistant), solar control, enhanced sound insulation, tempered, decorative, and frosted glass.

33.1 safety

33.2 ("safety") matt film

44.4 anti-burglary

Antisol blue 6

Antisol brown 4

Antisol brown 6

Antisol green 4

Antisol green 6

Antisol grey 6

Chinchilla white 4

Float 4

Float 6

Ornament (109) 4

Ornament Delta 4

Ornament Master Carre

Ornament Silvit 4

Ornament - stripes 4

Reflektofloat blue 6

Reflektofloat brown 6

Mirastar
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