U‑Haul trailer size guide
U‑Haul 4x8 cargo trailer dimensions: inside size and what fits
For small loads
The U‑Haul 4' x 8' Cargo Trailer holds 17 of the 36 items on our studio list: good for a few large pieces or a small load.
- Inside (L × W × H)
- 8'1" × 4'1" × 4'0"
- Door opening
- 3'1" × 3'5"
- Room inside
- 132 cu ft
- Biggest home that fits
- A few large items
Room inside is length × width × height of the cargo box; U‑Haul quotes 142 cu ft, measured its own way.
Which home sizes fit
Doesn't fit (6 home sizes)
Each home size is a typical furniture list plus the box counts from a moving guide. Our packing fills about 70–80% of a truck; a careful pro load fits more.
Will big items fit?
Tightest fits first. Headroom is the space left above it as loaded; at the door is the clearance getting it in.
| Item | How it goes in | Headroom | At the door |
|---|---|---|---|
 King mattress | Won't fit: Won't go through the door opening (3'1" wide × 3'5" high), even tilted. | – | – |
 Queen mattress | Won't fit: Won't go through the door opening (3'1" wide × 3'5" high), even tilted. | – | – |
 Refrigerator, French-door | Won't fit: Too big for the door opening (3'1" wide × 3'5" high) while kept upright (5'10" tall). It would have to be laid down to get in. | – | – |
 Washer | Won't fit: Too big for the door opening (3'1" wide × 3'5" high) while kept upright (3'8" tall). It would have to be laid down to get in. | – | – |
 Upright piano | Won't fit: Too big for the door opening (3'1" wide × 3'5" high) while kept upright (4'0" tall). It would have to be laid down to get in. | – | – |
 Treadmill | Won't fit: Too big for the door opening (3'1" wide × 3'5" high) while kept upright (4'11½" tall). It would have to be laid down to get in. | – | – |
 3-seat sofa | standing upright | 11" | 0" |
 Sectional: chaise section | standing upright | 11" | 3" |
 65" TV in its box | standing upright | 11" | 4" |
 6-drawer dresser | standing upright | 1'5" | 10" |
Inside size and where each number comes from
| Measure | Size and source |
|---|---|
| Inside length | 8'1" (246 cm) Confirmed · 2 sources |
| Inside width | 4'1" (125 cm) Other site, unconfirmed |
| Inside height | 4'0" (122 cm) Confirmed · 2 sources |
| Door width | 3'1" (94 cm) Other site, unconfirmed |
| Door height | 3'5" (104 cm) Other site, unconfirmed |
| Volume (brand's figure) | 142 cu ft Confirmed · 2 sources |
| Max load | 1,650 lb Not yet confirmed |
Measured against U‑Haul's page. Rental fleets vary by model year, so plan for a little less room than this. Wrong size? Tell us.
Notes on these numbers
SOURCE CAVEAT: every uhaul.com fetch returned ECONNRESET; all values come from WebSearch results that quote uhaul.com pages (the search tool returns a summarized answer with quoted fragments, not the raw page), so check asWritten punctuation against the live page before publishing. U‑Haul states all rental truck and trailer measurements are approximate. No numeric deck height published (only 'lowest deck'). No ramp. Business page disagrees: inside 8'1" x 4'1" x 4', door 3'1" x 3'5". One description on the product page says 'up to 1,600 lbs'. Empty weight 850 lbs; max combined weight of trailer plus load 2,500 lbs. Cross-check 29 Oct 2026, inside.width: All independents (and U‑Haul's own business page) give the older spec set; only the product-page snippet has ours. Possibly a newer trailer model, unverified. Used the smallest current value (4'1") instead of 4'2". Cross-check 29 Oct 2026, door.width: All independents (and U‑Haul's own business page) give the older spec set; only the product-page snippet has ours. Possibly a newer trailer model, unverified. Ours 3'5" x 3'10" matches no other source. Used the smallest current value (3'1") instead of 3'5". Cross-check 29 Oct 2026, door.height: All independents (and U‑Haul's own business page) give the older spec set; only the product-page snippet has ours. Possibly a newer trailer model, unverified. Used the smallest current value (3'5") instead of 3'10". Cross-check 29 Oct 2026, maxLoad: 1,650 vs 1,600, including on U‑Haul's own product page. Wheel wells (29 Oct 2026): U‑Haul trailers carry their wheels outside the box under fenders, so the floor is very likely flat; no text source says so.
Loading tips for this trailer
- The door is 3'5" high but the inside is 4'0": tall furniture has to be tilted to get in, then stood up.
- Load heavy furniture and appliances first, against the cab wall, and boxes last on top.
Every U‑Haul size side by side, and which one fits your home: U‑Haul truck sizes.
Compare
| Compared with | Difference | Biggest home |
|---|---|---|
| U‑Haul 5' x 8' Cargo Trailer | 1" shorter but wider and taller: 55 cu ft more room | A few large items |