Optics Ø14 mm clear glass Beam angle 54° Material Stainless steel EN W.nr. 1.4435 Colour Grey Surface treatment Pickled Size Ø25 x 2 mm Weight 30 g Mounting see mounting instructions Mounting hole Wood: Ø16 mm / masonry: Ø21 mm Built-in height 24 mm Min. tail size Ø1 mm Max. tail size Ø6 mm Protection rating IP 44