Box trucks are sold by the length of the box. Bodies up to 18 feet are usually 96 inches wide outside, about 92 inches inside. The 20 to 26 ft bodies are usually 102 inches wide, about 97 inches inside. Inside height grows with the body, from about 85 inches on a 12 ft box to about 102 inches on a 26 ft box.
Length is the inside of the box, from the front wall to the rear door.
Free, in the browser, no account needed. Every size on this page is a template in the planner.
| MODEL | LENGTH | WIDTH | HEIGHT | BETWEEN WHEEL WELLS | PAYLOAD |
|---|---|---|---|---|---|
| 12 ft box truck | 144″ (366 cm) | 92″ (234 cm) | 85″ (216 cm) | Flat floor | 5,000 lb |
| 14 ft box truck | 168″ (427 cm) | 92″ (234 cm) | 88″ (224 cm) | Flat floor | 6,000 lb |
| 16 ft box truck | 192″ (488 cm) | 92″ (234 cm) | 90″ (229 cm) | Flat floor | 6,500 lb |
| 18 ft box truck | 216″ (549 cm) | 92″ (234 cm) | 92″ (234 cm) | Flat floor | 7,000 lb |
| 20 ft box truck | 240″ (610 cm) | 97″ (246 cm) | 96″ (244 cm) | Flat floor | 8,000 lb |
| 22 ft box truck | 263″ (668 cm) | 97″ (246 cm) | 97″ (246 cm) | Flat floor | 10,000 lb |
| 24 ft box truck | 287″ (729 cm) | 97″ (246 cm) | 100″ (254 cm) | Flat floor | 10,000 lb |
| 26 ft box truck | 312″ (792 cm) | 97″ (246 cm) | 102″ (259 cm) | Flat floor | 10,000 lb |
Bare interior from manufacturer and body-builder specs, before insulation or paneling. Payload figures are ratings where published and estimates where not. Real vehicles vary by an inch or two, so measure yours before you cut materials.
The 12 ft box truck is 144 in (366 cm) long, 92 in (234 cm) wide and 85 in (216 cm) tall inside (12 ft of floor). With about 1 in of insulation and paneling on each surface, the inside is about 143 × 90 × 83 in. Payload is about 5,000 lb.
The 14 ft box truck is 168 in (427 cm) long, 92 in (234 cm) wide and 88 in (224 cm) tall inside (14 ft of floor). With about 1 in of insulation and paneling on each surface, the inside is about 167 × 90 × 86 in. Payload is about 6,000 lb.
The 16 ft box truck is 192 in (488 cm) long, 92 in (234 cm) wide and 90 in (229 cm) tall inside (16 ft of floor). With about 1 in of insulation and paneling on each surface, the inside is about 191 × 90 × 88 in. Payload is about 6,500 lb.
The 18 ft box truck is 216 in (549 cm) long, 92 in (234 cm) wide and 92 in (234 cm) tall inside (18 ft of floor). With about 1 in of insulation and paneling on each surface, the inside is about 215 × 90 × 90 in. Payload is about 7,000 lb.
The 20 ft box truck is 240 in (610 cm) long, 97 in (246 cm) wide and 96 in (244 cm) tall inside (20 ft of floor). With about 1 in of insulation and paneling on each surface, the inside is about 239 × 95 × 94 in. Payload is about 8,000 lb.
The 22 ft box truck is 263 in (668 cm) long, 97 in (246 cm) wide and 97 in (246 cm) tall inside (21 ft 11 in of floor). With about 1 in of insulation and paneling on each surface, the inside is about 262 × 95 × 95 in. Payload is about 10,000 lb.
The 24 ft box truck is 287 in (729 cm) long, 97 in (246 cm) wide and 100 in (254 cm) tall inside (23 ft 11 in of floor). With about 1 in of insulation and paneling on each surface, the inside is about 286 × 95 × 98 in. Payload is about 10,000 lb.
The 26 ft box truck is 312 in (792 cm) long, 97 in (246 cm) wide and 102 in (259 cm) tall inside (26 ft of floor). With about 1 in of insulation and paneling on each surface, the inside is about 311 × 95 × 100 in. Payload is about 10,000 lb.
About 92 inches for a 96-inch-wide body, which is common up to 18 feet. About 97 inches for a 102-inch-wide body, which is common on 20 to 26 ft trucks. Real bodies vary by an inch or two, so measure the one you are buying.
Usually, yes. A 92-inch-wide box is about 90 inches wide after insulation and paneling, which fits an 80-inch queen mattress across the truck with room to spare.
Not exactly. U-Haul trucks have a shelf over the cab and their own published sizes. They are on the U-Haul truck dimensions page.
The finished figures on this page allow about 1 inch per surface: each side wall, the ceiling, the floor, and the front wall. The rear is the door. A cold-climate build with thicker insulation takes more. In the planner you can choose the build-out level, or enter your own measurements.