Optics Ø14 mm clear glass Beam angle 54° @ 30° Material Stainless steel EN W.nr. 1.4435 Colour Grey Surface treatment Pickled Rotate 360° Size Ø31 x 4 mm Weight 50 g Mounting Embedded with silicone joint Mounting hole Wood: Ø21 mm / masonry: Ø26 mm Built-in height 16 mm Min. tail size Ø1 mm Max. tail size Ø4.5 mm Protection rating IP 44