The Junckers Clip System is a quick and flexible way of installing Junckers floating boards over a solid subfloor in either a domestic or commercial property. For domestic - 13 clips per sq m For Sports/commercial - 17 clips per sq m. Use 129.8 mm clips for fitting ships decking boards. Please note, for wide boards: 17 clips per sq m for 180mm wide Boulevard boards, 19 clips per sq m for 180mm wide Boulevard compound boards. 13 clips per sq m for 155mm wide Broadway boards and 17 clips per sq m for 155mm wide Broadway Compound boards. The above clips are universal, and are for use with 14mm, 20.5mm and 22mm boards. If in doubt, please contact the Technical Department. Size: 129.1mm - Green 1 hole. Size: 129.4mm - Yellow 2 hole. Size: 129.8mm - Red 3 hole.