A ladder rack moves long material above the bed so the bed can carry everything else. The choice comes down to how much weight you put up there and how often you take it off again.
What Load Rating Do You Need?
Add up what actually goes on the rack, then choose a rating above it with room to spare. Racks run from around 250 lb for a single side ladder carrier to 1,700 lb for a heavy duty full-size steel rack. Two extension ladders and a bundle of conduit sit comfortably under 300 lb. Scaffold sections, pipe and lumber climb past 800 lb quickly.
- 250 lb to 300 lb: one or two ladders, occasional use.
- 800 lb: a mixed load of ladders, conduit and light stock.
- 1,000 lb: daily trade use with heavier material.
- 1,700 lb: sustained heavy loads on a full-size work truck.
Full Rack or Single Side
A full rack spans both bed rails and carries load across the width, which is what you want for anything long and heavy. A single side rack runs down one rail only, keeps the other side of the bed clear for loading and suits a truck carrying one ladder rather than a stack.
Single side racks also cost less and leave more of the bed open from above, which matters if you load with a forklift or by hand over the rail.
Loading height is the other half of that decision. A full rack sits at cab height, so a 40 lb ladder has to go up and over. If one person loads the truck alone every morning, a lower single side carrier or a rack with a drop-down section saves a lot of shoulder over a year.
Aluminum or Steel
Aluminum racks keep weight off the rails and do not rust where the feet meet the bed. Steel takes more abuse and generally carries the higher ratings, which is why the heaviest racks are steel.
Weight on a rack sits high, so it affects handling more than the same weight lying in the bed. On a half-ton carrying light material, aluminum is usually the sensible choice. On a heavier work truck with a real load, steel is the one that holds the rating.
What Else Is Going in the Bed
A rack claims the bed rails, and so does everything else. Crossover boxes, tonneau covers and headache racks all compete for the same mounting points, and the front upright of a rack often lands exactly where a crossover box wants to sit.
Plan the whole bed at once. A low profile crossover under the front upright usually works where a standard height box does not.
Check the cab clearance as well. A rack sitting close to the back of the cab looks tidy until a ladder flexes on a rough road and marks the rear glass. Most racks are positioned to avoid that, but the margin shrinks once you load long stock that overhangs forward.
Narrowing It Down
Weigh the load, pick the rating, then decide between full width and single side based on how you load. See truck racks and ladder racks, and headache racks if the load also needs stopping at the cab.