Wausau's INvent Series expands to serve historical window renovations offers the look of double-hung windows with the convenience of projected units

Wausau's new 4250i and 4250i-XLT INvent Series features offset glass planes to replicate double-hung sash, while providing the ease of operation, durability and low air infiltration of projected windows.



Contributing to renovation projects' green building goals, all of Wausau's windows are manufactured using a high percentage of recycled content. As part of the Advantage by Wausau® standard product offering, these high-performance windows are pre-engineered and factory-glazed. Addressing weather-ability, durability and thermal performance, the 4.5-inch frame uses a polyamide thermal barrier. Low U-Factors allow broad expanses of vision glass to meet Model Energy Codes.



INvent Series' durable products are tested to meet AAMA AW-100 Architectural Performance Class ratings, including new AAMA 910-10 lifecycle testing to 4000 operating cycles. Unlike double-hung windows, there are no counter-balancing mechanisms to maintain or replace. Available on an accelerated delivery schedule, these competitively-priced windows are backed with an industry-leading warranty of up to 10 years.



Configurations for 4250i and 4250i-XLT include fixed, in-swing and out-swing casements, top-hinged, awning and hopper vents. Operable units present a seasonal opportunity for natural ventilation. Integral between-glass blinds minimize maintenance, while managing light and glare. Combined with the advantages of natural light, outside views and thermal performance, these qualities may aid buildings seeking certification under such programs as the U.S. Green Building Council's LEED® Green Rating System™.



For enhanced energy savings and condensation resistance, triple glazing and extra-wide thermal barriers may be specified. Hurricane impact and blast-hazard-mitigating designs also may be specified. Wausau's INvent Series' quality-controlled, factory fabrication ensures the intended performance and accommodates dual-color finishes.



With a palette exceeding 30,000 color choices, Wausau's painted finishes may be requested as liquid or powder coatings with ultra-low volatile organic compounds (VOC) and VOC-free content. Durable, VOC-free anodize finishes accentuate the metallic appearance, such as copper color that does not patina. Optional, glazed-in muntin grids and panning systems complement the historic aesthetic.