Single clips for attaching wire-mesh infilling. For economy it is possible to use Type 81 clips without the safety attachment, to secure various types of infill panels (plyboard, perspex, etc.) up to a thickness of 25/64". All clips are supplied with hexagonal head fixing bolts, M6x35mm long, and nut. Note: For D and E dimensions the figures are given for the respective minimum and maximum dimensions allowed by the slotted hole. Ø indicates diameter of the safety attachment bolt hole. The primary clip has a slot measuring .31 x .59 inches.