Ground-Level Guardrail, Mounting Location Floor, Floor Mounting Type, Mounting Hole Diameter 18 mm, Yes, Overall Depth 7 1/4 in, Overall Height 5 1/8 in, Overall Width 47 1/4 in, Black, Yellow, Polymer, (2) 18 mm Hex Head Through Bolt, (2) End Caps, (2) Fixing Plates, (2) Top Cap Lowers, (2) Top Cap Uppers, Kerb Inner, Rail, BSI PAS 13