|
1.
Master frame (look for welded corners). |
| 2.
Upper Integral lift rail (avoid mechanically attached rails). |
| 3.
Internal grids (decorative option). |
| 4.
Fusion-welded frame and sash corners (important that both frame
and sash corners are welded). |
| 5.
Mounted Sweep lock for security. |
| 6. Meeting
rail (with integral interlock to eliminate drafts). |
| 7.
Dual ventilation latches allows window to open only to a certain
pointgives you peace of mind. |
| 8.
Dual finger-release tilting mechanisms. Assure that they're
easy to use and grasp. (Click on circle.) |
| 9. Sash |
| 10. Double Insulating Glass, which should always have low-emissivity coating and heavier than air argon gas for optimum comfort and ENERGY
STAR efficiency. |
| 11.
Lower integral lift rail (avoid mechanically attached rails). |
| 12.
Sloped sill to ensure rapid water drainage and prevent leaks..
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