The Front Runner Gullwing Window replaces the rear window of a Defender and allows you to tilt-up the window providing easy access to the contents of your load area. Select either a tinted glass window for additional light and visibility, or the solid aluminum panel for security and privacy. The locking Front Runner Gullwing Window can be fitted together with the Gullwing Box (GWDL004) to create extra gear storage possibilities. The 6mm toughened glass with tinted laminate allows you to see what is stored, keeps your valuables secure, and adds a stylish finish to your vehicle's exterior. Package Includes One Window:1x Glass or Aluminum gullwing door assembly1x Outer frame1x Fastening kit2x Gas struts1x Right side inner bracket1x Left side inner bracket1x Top inner bracket1x Bottom inner bracket Materials used:6mm Toughened glass with tinted laminateBlack powder-coated 3CR12 stainless steel Product Dimensions:Overall: L 1120mm (44.1") x W 50mm (2") x H 490mm (19.3")Door Panel: L 1044mm (41.1") x H 414mm (16.3")Weight:15kg (33.1lbs) Glass specifications: Visible Light: Transmission: 44Reflection Outside: 5 Solar Energy: Total Elimination: 38Reflection Outside: 5Absorption 1: 47Direct Transmission: 47SHGC: 0.62 Shading Coefficient:Ratio: 0.71 U Value: (W/m2).K (Center of Glass): 5.8