Wausau
Designed for maximum performance, the Series 3151 single-hung tilt window meets the industry’s most stringent requirements for air infiltration, water resistance and structural integrity and has been tested to AAMA AW75 ratings. The improved window design is bead-glazed, accommodates various glass thicknesses and has a standardized 41/2-in. thermal frame depth.
Click Here for more information on this product.
PB Topical Ref