Designed for interior spaces with changing humidity.
China MRDoor Core
33 / 44 mmReference thicknesses
MRMoisture-resistant core
P3Reference in the earlier catalogue
InteriorFor humid indoor areas
01 / The material
Extra protection for humid interiors.
A moisture-resistant solid core for interior doors in rooms with higher humidity. The earlier catalogue lists it as an EN 312 P3-type particleboard.
It is intended for non-load-bearing interior work. Use suitable edge sealing, finishes and door construction for humid environments.
Moisture-resistant core
Non-load-bearing use
Suitable sealing required
02 / Product qualities
A solid particleboard panel for door manufacturing.
Two core thicknesses in the earlier catalogue.
Protect exposed edges and use the right coating system.
03 / Humid interiors
For kitchens and humid rooms.
The earlier catalogue describes uses such as interior bathroom and kitchen doors. The completed door needs suitable sealing and hardware.
Humid interior rooms
Interior door production
Protected edges
04 / Technical data
Moisture-resistant values.
| Property | Test method | Unit | 33 mm | 44 mm |
|---|---|---|---|---|
| Density, nominal | — | kg/m³ | 535 | 500–576 |
| Bending strength | EN 310 | N/mm² | ≥ 9.0 | ≥ 7.5 |
| Modulus of elasticity | EN 310 | N/mm² | ≥ 1550 | ≥ 1350 |
| Internal bond | EN 319 | N/mm² | ≥ 0.30 | ≥ 0.25 |
| Surface soundness | EN 311 | N/mm² | ≥ 0.95 | ≥ 0.95 |
| 24-hour swelling | EN 317 | % | ≤ 12 | ≤ 12 |
| Internal bond after cyclic test | EN 321 | N/mm² | ≥ 0.09 | ≥ 0.08 |
| Swelling after cyclic test | EN 321 | % | ≤ 11 | ≤ 11 |
| Thickness tolerance | EN 324-1 | mm | ± 0.3 | ± 0.3 |
| Length/width tolerance | EN 324-1 | mm | ± 5 | ± 5 |
05 / Formats
Reference board sizes.
01
915 × 2135mm
33 mm
02
915 × 2135mm
44 mm
03
1220 × 2440mm
44 mm
Moisture-resistant particleboard
06 / Material
What makes it different?
MaterialMoisture-resistant particleboard
ClassificationP3 reference in the old catalogue
ApplicationInterior doors in humid spaces
07 / Handling
Protect and store it.
- Store flat and under cover before use.
- Seal cut edges in the finished door.
- Avoid standing water and direct outdoor exposure.