The Front Runner Glass Gullwing Window for the Defender ​replaces the rear window of a Defender and allows you to tilt up the window, creating 100% easy access to the contents of your load area. -Consists of:1x Glass gullwing door assembly1x Outer frame1x Fastening kit2x Gas struts1x Right side inner bracket1x Left sideinner bracket1x Top inner bracket1x Bottom inner bracketMaterials used:6mm Toughened glass with tinted laminateBlack powder-coated 3CR12 stainless steelProduct 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