UnderCover - Elite LX Hard One Piece (Painted) Truck Bed Cover - 2017-2018 GMC Sierra & 2019 Limited 5.9ft Bed Ext/Crew (2017-2019 1500) GPA(WA457B) - Gasoline - UC1138L-GPA The side rails prevent items

The side rails prevent items from slipping or rolling off the rack during loading and allow you to fill the rack right up to the edge

While the offset tray design further minimizes bike to bike interference and maximizes functionality

The Hose Coupling is used to mount a hose coupling to suit the ARB high temperature inflation hose to a surface in or on your vehicle

or open to allow light and breeze through

UnderCover - Elite LX Hard One Piece (Painted) Truck Bed Cover - 2017-2018 GMC Sierra & 2019 Limited 5.9ft Bed Ext/Crew (2017-2019 1500) GPA(WA457B) - Gasoline - UC1138L-GPA The side rails prevent itemsThe Elite LX is the newest cover from UnderCover. It comes standard with all the features from the UnderCover Elite. Weve added a premium carpet lined underside, topped with flawless paint to match to make the LX the sharpest tonneau on the market. Engineered to provide a precise fit and finish to your truck bed.