ADJUST-A-WING DEFENDER SERIES - LARGE SHADEDefender : This is our “industrial strength range”. Reflection is similar to that of the Enforcer (approx 86%) and our guarantee is the same, but the surface is "titanium white" heat resistant powder coat that produces a very diffuse and evenly spread light footprint. The base metal is H18 aluminium alloy (3% magnesium) that is extra strong and springy and will maintain perfect parabolic curves under the roughest of handling during assembly, disassembly or relocating.