The Black Widow roof rack storage basket 24" Extension is great for carrying larger and longer camping gear, sports equipment, luggage, and miscellaneous utility items. Tubular side rails prevent the load from shifting and provide great attaching points for cargo nets and hook-end cargo straps. Features 1/2" and 3/8" mesh weave with 3" x 3-1/8" rung spacing. Mated design works only with the Black Widow RB-DLX-V2 roof rack storage basket. Mesh frame is treated with an electro-coat process then finished with a durable black paint coating.