Horizontal (Heavy Duty) Twisted Restraint Strap. Galvanised Heavy Duty Restraint Straps Are Suitable For Horizontal Restraint Applications Such As Tying Timber Roofs And Floors Into Masonry Walls. Multi Holed At 25Mm Offset Centres Restraint Straps Should Be Fixed Using Either 50Mm Long No.12 Woodscrews (Using Wall Plugs In Masonry For Vertical Restraint) Or 75Mm X 4.0Mm Diameter Galvanised Nails Into Timber. Designed And Tested In Accordance With Bs En 845-1 The Building Regulations Bs5268 Part 3 And Other Building Standards For Vertical And Horizontal Restraint. Galvanised steel. Total length including 150mm twist. 28mm wide x 4mm thick. Designed for lateral and horizontal restraint (as in roof trusses).