Hidden leaf system

The TM 62HI US, 74HI US, 77HI US systems are solutions for achieving the effect of an hidden window sash.

Windows with a hidden sash are a modern solution with high quality parameters.

The basis of the system consists of aluminium sections with a thermal spacer along with filling of high thermal insulation.

Advantages of the system

  • possibility of obtaining the minimalism of the sash on the outside by
    hiding it in the frame,

  • innovative design makes it possible to achieve construction
    simplicity,

  • excellent values of heat transfer coefficient,

  • an alternative to fixed glazing by obtaining the fix effect while
    maintaining the turn function,

  • it is possible to connect it with all YAWAL systems.

Technical parameters

  TM 77HI US TM 74HI US TM 62HI US
Thermal insulation EN 10077-2 Uw from 0,7 W/m²K Uw from 0,8 W/m²K Uw from 0,9 W/m²K
Air permeability EN 12207 Class 4 Class 4 Class 4
Water tightness EN 12208 E1050 E1050 E1050
Wind load resistance EN 12210 Class C5/B5 Class C4/B4 -
Anti-theft protection EN 1627 RC2, RC3, RC4 RC2, RC2N, RC3 RC2, RC3

System characteristic

  TM 77HI US TM 74HI US TM 62HI US
Frame structural depth 77 mm 74 mm 62 mm
Sash/leaf structural depth 79,9 mm 76,9 mm 74,9 mm
Infill thickness 24 ÷ 67 mm 24 ÷ 64 mm 24 ÷ 52 mm
Maximum dimensions L x H 1300 x 2700 mm 1300 x 2500 mm 1300 x 2400 mm
Maximum sash/leaf weight 150 kg 150 kg 150 kg
Structure type fixed, turn, tilt, turn
and tilt window
fixed, turn, tilt, turn
and tilt window
fixed, turn, tilt, turn
and tilt window