Wausau, Wis.-based Wausau Window and Wall Systems® 2250 Series windows have been certified by the National Fenestration Rating Council (NFRC) for energy performance. Listed in the NFRC product directory in the categories of casement, fixed and projected windows, Wausau's 2250 Series windows also meet commercial building criteria for the Pacific Northwest region.

As the flagship window product for Advantage Wausau, 2250 Series are competitively priced, pre-engineered, quality aluminum windows manufactured with thermal breaks for increased performance, according to the company. NFRC rates all products in two standard sizes on U-factor, solar heat gain coefficient, visible transmittance and condensation resistance, enabling builders and consumers to compare one product with another.

In addition to its NFRC certified Series 2250 windows, Advantage Wausau includes standard double hung, rolling and projected window products available with multiple configurations, glass options, accessories and finishes. Recently, muntin grids were added to further extend the windows' design appeal, as was outside glazing to allow more infill options such as spandrel glass or panels.

Responding to customers' quick schedules and tight budgets, focused facilities fabricate Advantage Wausau orders. Nationally recognized for its innovative expertise, Wausau's process combines advanced technology with skilled craftsmanship to manufacture pre-engineered, finished products with long-term performance and design aesthetics. Wausau stands behind its products with a limited warranty of up to 10 years.