ConceptSystem 77 Hidden Vent

Performance

Energy

Thermal insulation - Uf

2.1 W/m²K

Thermal insulation - Uw

1.4 W/m²K

Uw Dependencies

Frame-vent: Ug 1.0W/m²K, warm edge spacer, @1.23x1.48m (104mm sight line), 36mm glass

Comfort

Air tightness

Class 4 (600Pa)

Water tightness

Class E750 (750Pa)

Wind load resistance

Class C4 (1600Pa)

Acoustics - Rw(C;Ctr)

46(-1;-4) dB

Opening & closing resistance

Class 3

Safety

Burglar resistance

RC2 - PAS 24

Properties

Sightlines

Min. frame width (inward opening)

3 inch

Min. vent width (inward opening)

inch

Min. frame-vent width (inward opening)

3 inch

Depth frame

2 11/16 inch

Depth Vent

2 7/8 inch

Depth frame-vent

3 1/16 inch

Glazing

Rebate height

3/4 inch

Glazing method

Dry glazing - Siliconized glazing - Internal glazing - External glazing - Glazing bead

Min. glass thickness - vent

13/16 inch

Max. glass thickness - vent

1 7/8 inch