Wood provides excellent thermal insulation and is a very good construction material. Unfortunately, it is not resistant to weather conditions and requires maintenance. Veneered galvanized steel is weather-resistant. It is very rigid, resistant and durable. The WOOD-STEEL door frame combines the advantages of galvanized steel and wood, while eliminating their disadvantages.

The leaf is filled with very dense PUR foam using injection technology. This is the most technically advanced solution. It ensures the best parameters and properties of the door.

A burglar-proof pin with a diameter of 12 mm is mounted on the door leaf at each of the three hinges. After closing the leaf, the bolt goes to a special hitch located on the frame. This solution very effectively protects the door against an attempt to lift the leaf from the side of the hinges.

3D hinges are adjustable in three planes – you can move the leaf to the right or left, up or down, and slide it towards or away from the frame. This makes it possible to easily and efficiently eliminate leaks without having to remove the leaf.

ROTO QB lock:
• exceptional functionality + safety only in the MARTOM assortment
• three locks operated with one key movement
• fourth lock as standard
• unique two-stage pressure mechanism
• double tightness
• maximum safety
• german quality and precision

Made of polished stainless steel sheet with thermal filling of XPS. Scratch-resistant. Provides high rigidity and tightness. Easy to replace without dismantling the door. High aesthetics.

Leaf sheathing is made of galvanized steel laminated with PVC of the highest quality – the same that is used for the production of PVC windows and garage doors.
Galvanized steel is an extremely rigid and hard material, which ensures adequate resistance to dents or deformations.
The laminate is very durable and has a high resistance to scratches and UV radiation. No maintenance required. A special coating with low adhesion makes the door very easy to clean with the simplest agents – water and washing-up liquid.

In Nordic doors, the sealed unit consists of 3 panes with a thickness of 4mm each, making it a two-chamber unit that provides high thermal insulation.