Square Bollard Cover for 4 to 4-1/2" Pipe (42" Height)Square Bollard Covers Made of 1 4" Thermoplastic Polyethylene (LDPE) with ultra violet and anti static additives, the Square Bollard Covers are available in any color upon request. The Square Bollard Covers feature a sleeker look and a pointed top to enhance the aesthetics of security posts and steel bollards at storefronts, parking lots, facilities, campuses and more. The Square Bollard Cover is 42" tall but has a max pipe fit of 39". Custom cutting