ALT111 Interior door

ALT111 is a system that provides large opportunities to fabricate interiors of any purpose and style. ALT111 door systems help to organize the workspace in exhibition centers, offices and residential premises.

ALT111 system allows to manufacture single and double-leaf doors with single and double infill units, as well as wooden, sliding and all-glass doors.

The wide range of door options (classic and narrow door leaf, adjustable aluminum frame, concealed door hinges) provides multiple opportunities for creating elegant, stylish and functional door designs.

Aluminium door (standard leaf); Aluminium door (slimline leaf); Aluminium door (full glass leaf); Wooden door; Door design options
4-12.5 mm (single or double glazed) Possible infill unit thickness
115 kg Maximum leaf weight
Plastic clamps (unique patented solution) Method of infill unit fixation
1100 mm Maximum leaf width
2500 mm Maximum leaf height
Door with a transom
Door with fixed light
Fabrication benefits
  • Convenient installation due to the hinges fastening into the groove of the frame profile using fixing element. Adjustment of the door opening in height is possible.
  • Easy and quick dismantling due to the parts of the door frame, installed from different sides, are tightened with screws.
  • Concealed hinges of ALT111 doors do not require additional shaping.
  • Aesthetic appearance due to the absence of visible fasteners, as well as the installation of a removable cap after finishing the walls.
  • Easy assembly of the frame due to the use of clamping corners — laconic and stylish appearance of the finished system.
  • Various hinge options (standard, reinforced, concealed).
powder coating


  • any RAL-colour according to Qualicoat;
  • exclusive collections (Futura, Precis, Anodic);
  • variety of surface types (glossy, matte, textured);
  • innovative antimicrobial BIO-coating option.


  • conformance to Qualanod standard;
  • 9 standard colours;
  • possibility to choose different surface treatments (chemical etching, bead blasting, brushing).
wood-grain effect


  • conformance to Qualicoat standard;
  • 5 woodgrain options.