Roof Inner Strengthener 50-67 1500mm Long. 211-817-537A 211817537A £15.00 Quantity: at £15.00 each Add To Basket Split screen inner roof strengthener. Top quality part, made in house. 1500mm long. This is the part sandwiched between the gutter section and the roof. Perfect copy of the original part made in house CNC folded for 100% accuracy.