MSA SAFETY WORKS IN-2254 - CENTER FLOOR BASE - CENTER FLOOR BASE, BASE FEATURES BASE PLATE, BASE INSTALLATION FIXED, BASE MATERIAL STAINLESS STEEL, BASE MOUNT STYLE FLOOR MOUNT, COLOR GRAY, COMPATIBLE COMPONENT UPPER ARM MAST, CONFINED SPACE COMPONENT CENTER MOUNT FLOOR ADAPTER BASE, FOR USE ON CONCRETE OR STEEL FLOOR, FOR USE WITH MSA SAFETY XTIRPA ADAPTER BASE SYSTEM, HEIGHT 9 1/4 IN, INCLUDES MOUNTING HARDWARE NO, LENGTH 15 IN, MOUNTING LOCATION FLOOR, MOUNTING TYPE BOLT-ON, NO. OF MOUNTING HOLES 4, STANDARDS OSHA, ANSI, CSA - EQUAL TO G900690155