Gutmann GWD 070i

Proven window series with concealed sashes and a basic depth of 70 mm.

System Description

Proven window series with concealed sashes and a basic depth of 70 mm. Meets high requirements on thermal and sound insulation. By developing a modular system construction kit, it is possible to manufacture a wide range of insulated and even highly insulated element constructions in a favorable price-performance ratio.

Standard windows thermally insulated with good insulation of Uf = 2.1 W/m2K with thermally and statically optimised winglet insulators in high-strength PA 6.6 glass fibre technology

Premium highly insulated window with peak value of Uf = 1.7 W/m2K, 4-chamber coextruded hollow chamber central gasket, glass rebate insulation inserts and 9 mm thick, external glazing system gasket for improvement of frame thermal insulation


  • Symmetrical, stable structural design with identical corner and T connectors.
  • Surface mounted fittings up to sash weights of 300 kg; concealed fittings up to 180 kg.
  • Face width from 71 mm for tilt & turn windows.
  • Use of glass up to 46 mm in sash.
  • Euro groove for free choice of hardware.
  • Soundproofing up to 47 dB (SSK 5).
  • Burglar resistance RC 1N, RC 2 and RC 3 in accordance with DIN EN 1627.

System Properties

Water Tightness


Thermal Insulation



Uw triple1


1Element size: 1,230 x 1,480 mm | Ug value: 0,6 W/m2K | Glass spacer: Swisspacer Ultimate