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  Series 4000/4000BG Windows  
4000 Series Window and 4000BG Butt Glazed Window Specifications

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”

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.


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.

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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Phone: (631) 582-3060 | Fax: (631) 582-3974

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