Column Sentry® FIT Small is an adjustable column protector designed to fit around square, round, or H-columns from 4"x4" (100x100mm) up to 8"x8" (200x200mm) in size. With an outside diameter of 16" (406mm), the Column Sentry® FIT Small is a good fit for mezzanines, conveyors, or other small areas. Weighs 34 lbs. (16kg) . Tough, highly visible, easily installed, cost effective and versatile. An exclusive, patented air vent system allows air to escape during impact without splitting the sides. 4-sided design slides and adjust to fit exactly around columns within range. Design provides equal protection all around the column. Molded from a specific mixture of HDPE and EVA. Stackable. Weatherproof, chemical resistant and UV stabilized. Bounces back impact after impact protecting structural columns from collision damage.