| PR8520TA2 | PR8524TA3 | PRG8540TTA3 | PRG8544TTA3 | |
| Overall length | 23' 9" | 27' 9" | 40' | 44' |
| Box width / OA width | 8' 3" / 8' 6" | 8' 3" / 8' 6" | 8' 3" / 8' 6" | 8' 3" / 8' 6" |
| Overall height | 8' 4" | 8' 5" | 8' 2" | 8' 2" |
| Interior length | 19' 7" | 23' 7" | 39' 8" | 43' 8" |
| Interior width | 8' | 8' | 8' | 8' |
| Interior height | 6' 3" | 6' 3" | 6' 3" | 6' 3" |
| Platform height | 18" | 18" | 18" | 18" |
| Rear door | ramp | ramp | ramp | ramp |
| Axles | 3500 lb. tandem | 5000 lb. tandem | 5000 lb. triple | 5000 lb. triple |
| GVWR | 7000 lb. | 10,000 lb. | 15,000 lb. | 15,000 lb. |
| Payload capacity** | 3620 lb. | 5885 lb. | 7740 lb. | 7380 lb. |
| Hitch weight | 300 lb. | 380 lb. | 1960 lb. | 2080 lb. |
| Brakes | electric | electric | electric | electric |