CRL Universal Non-Contoured Horizontal Sliding Window 21-1/4 x 16-3/4 with 1-1/2 Trim Ring

31% Dark Gray Glass Black Powder-Coated Frame Universal Fit Our CRL Universal Flat Surface Windows are the "all-purpose solution" to ventilate and increase visibility in just about any vehicle with flat walls. The frames are made of extruded aluminum with a black powder-coated finish. The metal is then formed to surround 31% dark gray tinted tempered safety glass. The sliding panel has a positive locking latch for security, and the ventilating panel is screened to let air in and keep bugs out. Outside Frame Dimensions: 21-1/4 in (552 mm) x 16-3/4 in (425 mm) Cut Out Dimensions: 20 in (508 mm) x 15-1/2 in (394 mm) Clamp Ring/Angles: 1-1/2 in (38 mm) - Rectangular 90°/90° Additional Product Information: Universal handling lets you use them on the right hand, left hand or backside of the vehicle because built-in weep holes allow for proper drainage. Trim ring thickness options are 1-1/2 inch (38 millimeters) and 2-1/4 inch (57 millimeters), and the 2-1/4 inch trim ring is reversible for 1/8 inch (3 millimeters