MB-79N US
Hidden Sash
independantly tested to NFRC test procedures.
our standard high performance Aluminum window
MB-79N US
Hidden Sash
The ALUPROF MB-79N US is a solution which is cost-effective and functional, while meeting every technical requirement. The system is used to build windows featuring sashes that are invisible from the outside. In a row of adjacent fixed and operable windows, it is impossible to distinguish between the two types. The result is an elevation where the windows present a uniform view, irre
70mm
DEPTH of PROFILE [mm]
<0,8 W/m².K
<0,14Btu/h.ft².F*
THERMAL PERFORMANCE EN10077 / estimated to ANSI/NFRC 100-2020
0,25-0,42
SHGC - depening on glass
estimated SOLAR HEAT GAIN
Class 4 (highest)
airtightness to EN12207
<45dB
Phonic perofrmance
*Disclaimer : Values for size width 1200mm x hight 1500mm (47″x59″); NFRC values have been estimated & interpreted from European window tests with triple glazing and ultimate edge. The formulas used Uw 1W/m².K=0,176Btu/h.ft².F and SHGC using european glass g value * 0,7 – all European test reports can be requested before ordering !
- Material: ALUMINIUM
- Profile: Aluprof MB-69N US Hidden sash
- FITTINGS: Winkhaus HARDWARE
- Frame depth: 70mm
- Uw: 1,0 W/m².K
- Uf: >1,3 W/m².K
- Fits IGU glasses up to: <=51mm
Window Size 47″x59″ 1200x1500mm with GLASS Ug 0,5W/m².K. (
- ENERGIO PASSIV Uw : up to 0,66W/m².K – certified from PASSIV HOUSE INSTITUT DARMSTADT
- This translates to ANSI/NFRC imperial values of <0,14 Btu/(h.ft².F)*
*We have no NFRC testing for these high performance passiv windows – we have used 1W/m².K = 0,176 Btu/(h.ft².F) to transfer values in Imperial values
here some information on available glasses
Special passiv house glass ECLAS with highest solar heat gain contribution and best thermal and most light
Winkhaus Select invisible premium Hardware
More are feasible but here some examples of possible window typologies
