Pella 150 Series Replacement 27-1/2-in x 41-1/2-in White Vinyl Low‑E Argon Double‑Hung Window, Full Screen Included 1/4 inch Ratchet Commercial Grade Vinyl: Made from

Commercial Grade Vinyl: Made from durable material that is five times stronger than wood

Fits all SNAP-LOC's (E-track singles) and E-track

with mounting rail extenders that ensure an exact fit every time

and a click-lock floating installation for durable

Pella 150 Series Replacement 27-1/2-in x 41-1/2-in White Vinyl Low‑E Argon Double‑Hung Window, Full Screen Included 1/4 inch Ratchet Commercial Grade Vinyl: Made fromPella 150 Series LowE Argon DoubleHung Vinyl Window (27 1 2 x 41 1 2) Energy efficient replacement double hung window with durable white vinyl frame and SunDefense LowE argon glass. Both sashes tilt for easy cleaning and ventilation, and a high transparency full screen is included. Key Features: Energy Efficiency: SunDefense LowE argon double pane glass helps block heat and improve comfort year round Durable Vinyl: Multichambered, faderesistant vinyl