The RR ridge rafter connector provides alignment control and correct nailing locations. The RR47 may be used with any rafter slope up to 30°. Galvanised for corrosion resistance. For back-to-back installations, the minimum width of the ridge plate is 38mm. Secure in place using 3.75 x 30mm square twisted nails. Measurements (Ref. image 3): A: 47mm B: 83mm C: 33mm D: 114mm t (Thickness): 1.2mm Fixing Holes: Header: 4mm (x4) Joist: 4mm (x4) Nationwide delivery is available on this product, call 0117 967 4382 for details or submit a contact form below.