MasterLine 8 Hidden Vent

MasterLine 8 Hidden Vent

MasterLine 8 window

The refined appearance

For a modern minimalistic appearance of joinery MasterLine 8 offers the Hidden Vent profile system. With Hidden Vent profiles the vents are covered by the outer frames and transoms, which allows for a concealed install of the window elements behind the window reveal. Within composed elements opening elements cannot be distinguished from fixed panes, giving facades a refined look.


MasterLine 8 Hidden Vent elements are available on three insulation levels: ‘standard’, HI and HI+ and with two different glazing options for the vents. The first option is with a small concealed glazing bead on the exterior side of the vent and a robust inner half scale to allow for large dimensions and weights. The second option it with an internal glazing bead to allow for easy installation and glazing of the elements.



Between countries, there are differences in how a window is placed into the wall. For more information on the usage of Reynaers BIM models, download the BIM guidelines.


The Architect Catalogue (PDF) contains information and filenames of the individual CAD files. Please consult this document to find the required CAD files for every section.

Technical information


Min. Visible width frame: inward opening3 1/8 in. 
Min. Visible width frame-vent: inward opening3 1/8 in. 
Min. Visible width T-profile4 3/16 in. 
Max. height vent110 1/4 in. 
Max. width vent47 1/4 in. 
Max. weight element330 lbs 
Overall system depth frame3 1/16 in. 
Overall system depth vent3 1/16 in. 
Rebate height1 1/16 in. 
Min. Glass thickness1 1/4 in. 
Max. Glass thickness2 1/16 in. 
Min. Glass thickness vent1 3/16 in. 
Max. Glass thickness vent2 9/16 in. 
Glazing methodDry glazing with EPDM or neutral silicones  
Thermal breakOmega Hollow Chamber  


Air tightness max. test pressure0.01 cfm/ft²
Water tightness20 psf
Design pressure70
Acoustic performance STC (ASTM E90-09/1332)50
Acoustic performance OITC (ASTM E90-09/1332)44
AAMA RatingClass AW
PG Rating70
Burglar resistance (EN)RC2/WK2

Opening elements

  • Inward opening combined elementsInward opening combined elements
  • Inward opening double casementInward opening double casement
  • Fixed windowFixed window
  • Inward opening third ventInward opening third vent
  • Inward opening tiltInward opening tilt
  • Inward opening tilt turnInward opening tilt turn
  • Inward opening turnInward opening turn
  • Inward opening turn tiltInward opening turn tilt
  • Inward opening ventilation ventInward opening ventilation vent