Ceiling mounting set for Synergy21 LED panels Suitable for ceiling or wall mounting or similar consisting of: 4x pot magnets a 4Kg holding force - Material NdFeB - Pot diameter D 16 mm - Total height H 4.5 mm - Bore d 1 3.5 mm - Countersink d2 7 .22 mm -countersink t 1.86 mm -tolerance +/- 0.1 mm -coating nickel-plated (Ni) -steel Q235 -magnetization 38SH -adhesion force approx. 4 kg (approx. 39.2 N) -max. Operating temperature 150°C - weight 5 g