CURT Manufacturing 13028 Features: Sealed Main Body Prevents Rusting From Inside Out Open Back End On Receiver For Easy Cleaning One-Piece Collar Reduces Rust And Ensures Strength Exceeds V-5 Standards Durable Powder Coat Finish Resists Rust/Corrosion Robotic Welding For Superior Strength And Fit Limited Lifetime Warranty To Original Purchaser Height: 20.00 Width: 10.00 Length: 42.00 Weight: 42.00 lbs Fitment: 2006/GMC/Sierra 3500/WT Standard Cab Pickup 2-Door/8.1L 496Cu. In. V8 GAS OHV Naturally Aspirated::Bed Length = N/R, RearMain Body Concealed~ w/o 10 in. Step Bumper~ Require Drilling For Install~ Install Time 60 min.^^2006/GMC/Sierra 3500/WT Standard Cab Pickup 2-Door/6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged::Bed Length = N/R, RearMain Body Concealed~ w/o 10 in. Step Bumper~ Require Drilling For Install~ Install Time 60...