Knauf Aquapanel Rustproofed Screws SN40 has been specially developed for fixing Aquapanel Exterior Cement Board to timber substructures. These needlepoint screws are made from V2A stainless steel. The screws also have milled ribs to the edge of the screw head that ensures that they can be screwed and countersunk. These stainless steel fixings are used at 150mm centres. A 2400x900mm board will require 35 screws fixed back to battens at 600mm centres. 250/box
