AMP Research PowerStep XL 3" Electric Running Boards Additional Drop Model 77152 01A 60 1 2" L F 550 Super Duty Model 415088 401723 Finish:Bright Aluminum F 550 Super Duty Model 415088 401723 Style Under Bed Truck Box Lock System 3 Point Latch Install Time (hours) 1 Material Aluminum Color Aluminum Construction Heavy Duty Welded Durability Maximum Key Alike On Request Latch Mechanism Latch Lid Construction Heavy Duty C Channel Reinforced Lid Profile Single Mounting Location Under Bed Opening Type Single Lid Security Extreme Warranty Limited Lifetime Weather Strip Memory Resistant D Shaped Ribbed Latch Yes Powder Coat Finish Yes UPC 783965042031 DIMENSIONS 22 23 F 150 Lightning Model 77152 01A AMP Research PowerStep XL 3" Additional Drop 21 23 F 150 Crew Cab