2007+ Sprinter Van - Sliding Door Floor Extension w/Access for wood sub floor trimExtends the usable cargo floor space over slider door step area Adds extra storage under modified subfloor Intended to be used with wood sub floor Made from durable 1 8" powder coated aluminum Made in the U. S. A. Who doesn't like more storage. RB's sliding door floor extension is great when adding a custom subfloor to your van as it help increase floor space with storage space below. Made from durable 1 8" powder coated aluminum here in the U. S. A.