Aluminium external frame for durability, PVCu internal frame for insulation. External or Internal beaded. Equal leg, odd leg and ovolo option. Single or dual colour finishes. Wood Structure finishes. Espag Shootbolt locking or cockspur handles. Concealed Stainless Steel Stays or butt hinges. 24mm 28mm or 32mm Double Glazed options.
The Duotherm Casement Window System provides the advantages of aluminium, light and strong; resistant to wrapping, rot and rust on the outside and PVCu, warm to the touch with good insulation requiring only minimum maintenance on the inside
The specification is suitable for both replacement windows into existing buildings and installation into new building work. With the combination of frame and vent profiles it is ideal for the domestic market place.
Aluminium: Profiles are extruded from 6063 T6 alloy and comply with the recommendations of BS1474.
PVCu: Profiles are multi-chambered and are extruded from high grade windows material.
Aluminium: Polyester powder organic coating to BS6496 in White 9910 high gloss, Havana Brown 8912 satin, Black 9005 matt or agreed colours in matt or gloss finish. Anodised to BS3987 to a natural self colour and other agreed colours. Wood grain effect finish in mahogany or light oak are also available.
PVCu: Solid white high gloss or woodgrain effect in mahogany or light oak.
Windows having been tested in accordance with the requirements of BS6375:Part 1 have achieved the following classification for weather tightness.
Air permeability Class C: 600pa
Water Tightness: 600pa
Wind Resistance: 2000pa
Outer Frame: 55mm and 70mm.
Casement: equal-leg, odd-leg.
Sealings: with extruded E.P.D.M rubbersand PP-brushes.
Glazing: externally beaded and internally beaded
Maximum limitations
windows are manufactured to required design to within the following maximum limitations (subject to location and conditions).
1. Side Opening: max. Width 650mm
2. Top Opening: max. Height 1200mm
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