The casement window is proven to be the most efficient, operating window on the market today. Using bulb seals, extruded seals, and Truth Encore Hardware this window combines simple elements to produce a great looking window that rarely requires service.


Triple weather sealing system

  • A combination of two bulb seals along with an extruded seal that is attached to the sash frame.
  • The extruded seal allows vacuum-type tightness allowing better energy efficiency than brush seals.

Truth Encore Hardware

  • The industry’s most reliable and attractive operating mechanism.
  • The contoured face-plate allows for an almost completely hidden handle.
  • Name-brand recognition and a proven ability to last decade after decade.

Heavy Duty Lock & Load Screens

  • Window-Pro has designed a better casement screen with no side pins. This allows easier removal of screens for cleaning and also allows a more rigid screen design for tighter fitting and more attractive bevelling of the frame. No more tabs, no more pins, just lock & loaded screens that actually keep the bugs out.

Ratings - Casement

Product Windows
Brand Name Window-Pro Ltd.
Model Number CAS-ARG-LOF
NRCan Number NR7318-2189951-ES
Style Casement
Frame Material Vinyl
Sash Material Vinyl
Layers of Glazing 2
Low E Surface Surface 3
Glazing Cavity Width (mm) 14.4
Glazing Cavity Fill Argon (x1)
U-factor W/m2*K (Btu/h*ft2*F) 1.66 (0.29)
Solar Heat Gain Coefficient 0.44
Air Leakage (m3/h/m) 0.19
Effective Date (yy/mm/dd) 09/12/03
Energy Performance Certification Agency Intertek
Structural Certification Agency Intertek
Low E Type Hard Coat
Emissivity 0.155
Spacer Hybrid
Tint -
Energy Rating +28
Visual Transmittance 0.47
Crack Length (metres) 4.09