Weather Guard Lo-Side Boxes

Shop Weather Guard lo-side boxes, also called side mount tool boxes. A lo-side box mounts along one bed rail and sits low, so the center of the bed stays open for long or flat material while your tools stay within arm's reach. Weather Guard lo-side boxes come in 41-, 56- and 87-inch lengths, all 17 inches wide and 13 inches tall, in standard and low profile versions. Aluminum models come in bright aluminum, gloss black, textured matte black and gun metal gray; steel models come in white and gloss black. They're American-made, backed by a limited lifetime warranty, and most orders ship within 1 business day from our strategically located warehouses across the US. Compare every style in Weather Guard tool boxes or see the full Weather Guard lineup.

Choosing a Lo-Side Box Length

Measure the usable length of your bed rail before ordering. The 41-inch box suits shorter beds or a partial run, the 56-inch box is a mid-length option, and the 87-inch box covers a long rail. For a ready-matched setup, see the Weather Guard low profile truck box package for the RAM 1500 with a 5.5-ft bed.

Related Weather Guard Equipment

Want full-width storage behind the cab instead? See Weather Guard crossover boxes. Need more height on the rail? Compare Weather Guard top mount boxes. Replacement locks and keys are in Weather Guard tool box locks, and you can compare other brands in all side mount boxes.

Weather Guard Lo-Side Box FAQs

What is a lo-side tool box?

A lo-side tool box, also called a side mount box, mounts along one bed rail at a low height. It keeps tools reachable from the side of the truck while leaving the middle of the bed open.

What sizes do Weather Guard lo-side boxes come in?

Weather Guard lo-side boxes come in 41, 56 and 87 inches long, all 17 inches wide and 13 inches tall, in standard and low profile versions.

Should I buy one lo-side box or a pair?

Many buyers run a matched pair, one on each bed rail, for balanced storage on both sides of the truck. A single box works if you want one side of the bed kept clear.

What finishes are available?

Aluminum lo-side boxes come in bright aluminum, gloss black, textured matte black and gun metal gray. Steel lo-side boxes come in white and gloss black.

Are Weather Guard lo-side boxes made in the USA?

Yes. Weather Guard lo-side boxes are American-made and backed by a limited lifetime warranty against defects in materials and workmanship.