DUBHE

The Dubhe door is a high-quality aluminum model designed for durability, energy efficiency, and safety. The door slab is filled with PUR polyurethane foam and wood, offering a thickness of 2.2 inches for solid thermal performance and structural strength.

A dual sealing system—one seal in the frame and another in the supporting part of the door slab—minimizes vibration and prevents heat loss. These seals are resistant to atmospheric changes, maintaining their shape and function. Anti-burglary reinforcements are built into the hinge areas and locking points of the frame for enhanced protection.

Door size with frame:

• Width: from 31.8″ to 43.6″

• Height: from 80″ to 82.3″
  Custom larger sizes available. See Lim or Pivot models.

The Dubhe door set includes:

• Door slab and frame with two gaskets;

• ROTO strip locking system with an independent upper lock and three reinforced anti-theft bolts;

• Two cylinder inserts with keys;

• Standard handle (T-bar long handle available as an option);

• Viewfinder (for solid doors);

• 3x adjustable hinges for anti-burglary protection;

• Aluminum threshold with gasket;

• 3x anti-theft security bolts.

Insulation performance:

• R-Value 4.8 for solid doors

• R-Value 3.8 for glazed doors

• Acoustic insulation: 31 dB (for non-glazed doors)

• Glazed doors include triple glazing packages

The Dubhe door is prehung—already mounted onto the frame—making it fully ready for quick and easy installation.