Description
Our standard window system is designed to meet all the demands of modern living, combining outstanding thermal performance with exceptional sound insulation. With its slender sightlines and slim installation depth, it is equally well-suited for new builds and renovation projects. The system delivers excellent energy efficiency, with standard U-values ranging from 0.21 – 0.23 Btu/hr·sq ft·°F. For even greater performance, U-values as low as 0.14 Btu/hr·sq ft·°F can be achieved when the frame and sash are filled with ProEnergyTec® insulation foam. Engineered for versatility, it accommodates modern triple glazing or special functional glazing up to 50 mm thick, and provides sound insulation up to 46 dB. Depending on the chosen frame/sash combination, glass type, and steel reinforcement, multiple thermal configurations are possible — ensuring a tailored solution for every project.
Features
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Thermal insulation U-value on standard window of 0.21 - 0.23 Btu/hr-sq ft-°F
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Steel-reinforced chambers for effective protection against unwanted intruders.
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Excellent sound reduction properties.
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Easy care and maintenance thanks to robust and weather-resistant surfaces.
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Made from high-quality uPVC - Will not rot, corrode, fade, discolor or deform when exposed to moisture or damp conditions.
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Available in Parallel or Tilt Turn opening for maximum ventilation and security.
Color Options & Finishes
All H.O. Schlüter windows are finished with a premium laminate film built to withstand harsh conditions — from UV exposure and freezing winters to humid, coastal climates. The surface stays beautiful for years, resisting dirt, pollution, and even salt air, while remaining easy to clean — graffiti included. Backed by a 20-year North American warranty, it’s a finish made to last.
Specification
Min. U-Value (1230 x 1480 mm window)
Fire Resistance (ASTM E84)
Air Leakage Resistance (ASTM E283-04)
Water Penetration Resistance (ASTM E547)
Performance Class (NAFS 08-11)
Performance Grade (NAFS 08-11)
Burglar Resistance (ASTM F588)
Sound Transmission Class (ASTM E413-16)
OITC (ASTM E1332-16)
Volatile Organic Compounds (AgBB)
0.14 Btu/hr-sq ft-°F
Class A
Pass A3
Pass - PG 100
LC, CW, AW
35-70
Grade 20 / 40
43 (maximum)
36 (maximum)
Pass
Dimensions
Frame Depth
Minimum Frame Length
Maximum Frame Length
Minimum Glass Thickness
Maximum Glass Thickness
Minimum Sash Width & Height
Maximum Sash Width & Height
Minimum Divider Width
Minimum Sash + Frame Sightline
Sash + Floating Mullion Sightline
76 mm
250 mm
3000 mm
4 mm
50 mm
450 mm
2500 mm
26 mm
116 mm
159 mm
