ConceptSystem 77 Hidden Vent
Technical informationPerformance
Energy
- Thermal insulation - Uw Double
- 0.24 Btu/hr.ft².°F
- Thermal insulation - Uw Triple
- 0.18 Btu/hr.ft².°F
- Uw Dependencies
- Frame-vent: Ug 1.0W/m²K, warm edge spacer,@1.23x1.48m (78mm sight line), 36mm glass
Comfort
- Air tightness
- 0.04 cfm/ft³
- Water tightness
- 12 psf
- Air tightness
- Class 4 (600Pa)
- Water tightness
- Class E750 (750Pa)
- Wind load resistance
- Class C4 (1600Pa)
- AMAA rating
- Class AW
- PG rating
- 120
- Acoustics STC
- 43 dB
- Acoustics OITC
- 34 dB
- Opening & closing resistance
- Class 3
Safety
- Burglar resistance
- RC2 - PAS 24
- Operating Forces Class
- Class 1
Properties
Max. dimensions & weight
- Min. height of vent
- 23 5/8 inch
- Max. height of vent
- 94 1/2 inch
- Min. width of vent
- 17 11/16 inch
- Max. width of vent
- 31 1/2 inch
- Max. weight of vent
- 264 lbs
Sightlines
- Min. frame-vent width (inward opening)
- 3 inch
- Min. vent-vent width (inward opening)
- 4 5/8 inch
- Min. width T-profile
- 4 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 - frame/element
- 3/16 inch
- Max. glass thickness - frame/element
- 1 7/8 inch
- Min. glass thickness - vent
- 13/16 inch
- Max. glass thickness - vent
- 1 7/8 inch