The RELIABILT 105 Series single hung window is an affordable option for those seeking high performance on a limited budget. With a side-loaded bottom sash and dual lift rails, this window is easy to remove and operate. It is suitable for both new construction and remodeling projects and comes with a pre-punched nail fin and built-in accessory channels for easy installation. Additionally, this window has a DP-50 rating (Design Pressure rating) for sizes up to 36 inches wide and 74 inches high. The modular size makes it simple to determine rough opening widths for multiple units. This window also features Low-E glass and Argon insulating gas for reflectivity and improved thermal efficiency. (Note: ENERGY STAR qualifications may vary depending on location; please refer to the U-Value and SHGC values for specific details). The 5/8-inch contoured grid pattern between the glass panes adds a touch of style to your home without the extra hassle of cleaning grids on the exterior.