The Competitor white vinyl basement window is impact-resistant solid vinyl frame and sash. The window has energy-efficient 5/8 insulated glass standard R-Value 2.00 U-value .5. Sloped sill for efficient water removal. No tool sash removal. Fully weather-stripped. Cam locking handle. Full screen included. Extruded 13/16 offset fin for use in single piece pourbuck or block installation.