Double Hung Window
Performance
All our windows have to go through a rigorous process of testing and approvals. To pass the highest performance standards, Belisle’s products are tested, both in our R&D department and at an independent certified testing laboratory, under extreme weather simulations. All our products are rigorously tested for air and water infiltration as well as structural and energy performance.
Because we at Belisle are committed to receiving the best ratings, we are proud of the results from the many testing parties to which we submit our products - NFRC, Energy Star, or AAMA.
|
Test |
Chain |
Balance |
|
Air tightness |
A1 |
A2 |
|
Water tightness |
B4 |
B4 |
|
Wind load resistance |
C5 |
C5 |
Muntins SDL or TDL type with choice of colors for perimeter and internal spacer bars | ; "Muntins") |
Hardware Solid brass sash locks and lifts with many finishes and options available | ; "Hardware") |
Screen Aluminium or wood frame screen with fibreglass, stainless steel or bronze mesh | ; "Screen") |
Two systems available Weight and chain with heavy duty hardware All wood Invisible balance (no plastic liners) | ; "Two systems available") |