description thule truck rack sr base rail f-150 super crew the base rail is quick to install and doesn't require any drilling into your truck. it also has smooth sliding and adjustability due to its custom fit base rail. california proposition 65 warning. features includes all required mounting hardware quick installation without drilling into the truck aluminum construction requires thule tracrac sr overhead rack or thule xsporter pro shift overhead rack (sold separately) smooth sliding and adjustability due to custom fit base rail. specifications acme tools brand name thule acme tools part number 21508t assembled depth (in) 65.6 assembled height (in) 1.9 assembled weight (lbs) 20.2 assembled width (in) 4 brand / model compatibility requires thule tracrac sr overhead rack or thule xsporter pro shift overhead rack (sold separately) california proposition 65 warning required yes country of origin united states globaltradeitemnumber (gtin) 00721260215088 height (in) 1.9 package contents 1 sr base rail (f-150 super crew) package depth 81 package height 5 package weight 20.2 upc 721260215088 weight capacity (lbs) 1250