Fixed roof bracket: 1.Durable 2.Easy installation 3.kinds:45degree,60degree,90degree Fixed roof bracket: 1.45 Degree Fixed Roofing Brackets(506X50X145mm), 60 Degree Fixed Roofing Brackets(497X50X164mm), 90 Degree Fixed Roofing Brackets(438X50X165mm),2.Durable all steel construction with 6" platform.3. Thickness of steel:3mm (we also have heavy duty kind with thickness of 4mm)3.Easy installation ...