Project Source 10001 Series 35-1/2-in x 35-1/2-in x 3-in Jamb Left-operable Vinyl White Sliding Window Half Screen IncludedThis Project Source vinyl sliding window is ideal for garages, porches, barns, and steel buildings. It features a solid welded main frame and sash construction, along with a rigid vinyl mounting flange and interlocking panels for a weather tight seal. The built in J channel is compatible with all types of siding and finishes. This window measures 35 1 2 inches wide by 35 1 2 inches high, with a rough opening of 36 inches wide by 36 inches high. Here's