Please click the arrows to browse through the slide show. Features ▪ Maintenance Free Vinyl which requires no painting or staining ever. ▪ Triple weather seal on sash to create a continuous high performance barrier against the elements. ▪ Positive interlock, with dual weather strip, assures a tighter seal at the meeting rail providing an additional air barrier resulting in less heat loss. ▪ Permanently fusion welded main frame and sash adds exceptional strength and durability. ▪ For a complete list of the features found on these windows, click here.