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MasterLine 8 Hidden Vent

Technical information



Thermal insulation - Uw Double
0.21 Btu/hr.ft².°F
Thermal insulation - Uw Triple
0.14 Btu/hr.ft².°F
Thermal insulation - Uf
1.2 W/m²K
Thermal insulation - Uw
0.81 W/m²K


Air tightness
0.01 cfm/ft³
Water tightness
20 psf
Air tightness
Class 4 (600Pa)
Water tightness
Class 9A (600Pa)
Wind load resistance
Class C3 (1200Pa)
AMAA rating
Class AW
PG rating
Acoustics STC
50 dB
Acoustics OITC
44 dB


Impact resistance
Opening & closing resistance
Class 3
* Note: Performances and properties may be different depending on the profile combinations


Max. dimensions & weight

Min. height of element
654 mm
Max. height of element
2854 mm
Min. width of element
504 mm
Max. width of element
1254 mm
Min. height of vent
600 mm
Max. height of vent
2800 mm
Min. width of vent
450 mm
Max. width of vent
1200 mm
Max. weight of vent
150 kg


Min. frame width (inward opening)
80 mm
Min. frame-vent width (inward opening)
80 mm
Min. vent-vent width (inward opening)
127 mm
Min. width T-profile
107 mm
Depth frame
77 mm
Depth Vent
77 mm
Depth frame-vent
87 mm


Rebate height
7.5 mm
Glazing method
Dry glazing Siliconized glazing Internal glazing External glazing Glazing bead Structural Glued Glazing
Min. glass thickness - frame/element
32 mm
Max. glass thickness - frame/element
52 mm
Min. glass thickness - vent
30 mm
Max. glass thickness - vent
65 mm