When screw fixing Marmox Multiboard it is essential to use washers. With the appropriate corrosion resistant screws, our slimline plastic washers grip tightly and become virtually flush with the surface of the Multiboard when screwed in tightly. Packs of plastic washers are sold in bags of 100.
As an alternative to the plastic washers, we supply metal washers (galvanized steel) which offer the exact same properties.
The diameter of the hole in the Marmox plastic washer is 4mm. The hole in the metal washer is 6mm wide.