31-3/8 In. X 51-1/4 In. 50 Series Single Hung White Vinyl Insulated Window with
31-3/8 In. X 51-1/4 In. 50 Series Single Hung White Vinyl Insulated Window with Nailing Flange and Colonial Grilles. Grille Type Grille Between Glass. The bottom window sash opens for ventilation and tilts in for easy cleaning.