| 4000 Series Window and 4000BG Butt Glazed Window Specifications |
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| General |
Windows to be manufactured by Lynbrook Glass, Hauppauge, NY. Series No. 4000 (BG) or equal. Framing members shall be neatly mitered and/or butt joined and sealed. Corners shall be mechanically fastened, and/or hydraulically crimped. |
| Framing Members |
To be 2” Wide x 4 ” Deep
Wall thickness to be .093”
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| Thermal Barrier |
To be polyurethane poured in place between the exterior and interior frame to cause a rigid definite separation between the two metals tensile strength of 9900 P.S.I. and C.R.F. of 54-56. |
| Ventilators |
To be of tubular construction mitered and hydraulically crimped – all joints to be sealed – entire frame to be double sealed at interior and exterior with appropriate gaskets to maintain performance requirements. |
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| Performance Rating |
Air Infiltration to .02 C.F.M./Ft.² at 6.24 P.S.F.
Water Resistance to 15 P.S.F. No entry.
Uniform Load Deflection: Not to exceed L/175
C.R.F. (Condensation Resistance Factor): 71
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