Base Length : 2.64 in (67.1 mm), Base Width : .39 in (9.9 mm), Compatible Hole Size : .156 in (4 mm), Distance Between Fixing Holes : 1.58 in (40.1 mm), Inside Width : 2.13 in (54.1 mm), Maximum Panel Thickness : .079 in (2 mm), Minimum Panel Thickness : .039 in (1 mm), Material Flammability Standard : UL94 V-2