# Enclosed Cargo Trailer Rental in Upland > Rent an enclosed U-Haul cargo trailer in Upland that locks and keeps your load out of sight. Security tips for overnight stops and a free hookup check. Source: https://route66autorepairshop.com/u-haul-rentals/cargo-trailers/enclosed-cargo-trailer-rental Updated: 2026-09-17 Business: Route 66 Auto Repair, 1775 W Foothill Blvd, Upland, CA 91786, (909) 608-7699 Hours: Monday to Friday 8 AM–5 PM, Saturday 8 AM–2 PM, Sunday closed **TLDR:** **Enclosed trailers** keep your load **out of sight behind a lockable door**. Add a padlock, park smart, and get a **free hookup check** at pickup. An enclosed cargo trailer is a rolling box with a door you can lock. Route 66 Auto Repair in Upland rents enclosed U-Haul trailers in 4x8, 5x8, 5x8 with ramp and 6x12 sizes, reserved on uhaul.com. The draw is security: what you load stays out of sight at a hotel or a rest stop. Every trailer gets a free hookup check before it leaves our lot in Upland. ## Who chooses an enclosed trailer? - Families on a multi-day move with hotel stops - Swap-meet and craft-fair vendors hauling inventory - Anyone clearing an estate or storage unit with private belongings - Students moving electronics and personal papers - Small businesses relocating files, stock or equipment ## How do you keep an enclosed trailer secure on the road? Lock the door every time you walk away, even for a quick meal. A padlock through the door latch is the simplest step. Park where you can see the trailer, in a lit spot, and back the door close to a wall or another vehicle when you safely can. At a hotel, ask the front desk where trailers can park and choose a space near the entrance or a camera. Keep the trailer hooked to your vehicle overnight when the lot allows it. Take valuables, documents and medications into the room with you. ## What an enclosed trailer does not solve A lock slows theft; it does not stop a determined thief, so keep irreplaceable items in the cab. The walls also add no towing ability. A packed enclosed trailer is still weight on your hitch, and your tow vehicle must be rated for it. For packing against rain, dust and heat, see the [weather-protected cargo trailer](https://route66autorepairshop.com/u-haul-rentals/cargo-trailers/weather-protected-cargo-trailer-rental) page. ## Which enclosed size fits your load? In short: the [4x8](https://route66autorepairshop.com/u-haul-rentals/cargo-trailers/4x8-cargo-trailer-rental) for a dorm or a few pieces, the 5x8 for a studio, the 5x8 with ramp for items that roll, and the [6x12](https://route66autorepairshop.com/u-haul-rentals/cargo-trailers/6x12-cargo-trailer-rental) for larger loads behind a capable vehicle. Confirm current capacity on uhaul.com for each. ## How pickup works for an enclosed trailer 1. **Check in:** Show your license and reservation at the counter. 2. **Door and latch check:** We open and close the rear door with you and show you the latch. 3. **Condition photos:** Existing marks and the empty cargo area are photographed. 4. **Hookup check:** Ball, coupler, pin, chains and lights are checked free of charge. 5. **Pull out slowly:** A slow loop of the lot lets you feel the trailer before traffic. ## What's included with an enclosed trailer rental - Counter check-in and contract review - Rear door and latch walk-through - Condition and cleanliness photos - Free hookup check - Light test with a second person - Return and after-hours drop instructions ## Is anything on your tow vehicle a need-now? **Need now:** - A trailer plug that shows no signal on one side - Tires with cords showing or sidewall bulges - An overheating warning on your last freeway drive **Need later:** - A cracked but tight mirror housing - Weak cabin AC on a short in-town move - An oil change that is due soon ## How pricing and timing work Rates for every enclosed size are set by U-Haul and shown on uhaul.com at booking. The hookup check is free. If you ask us to look at your tow vehicle, the paid inspection fee is stated at the counter before we start, and AAA members get 10% off repair parts and labor, up to $75, with the card at time of service. ## Returning an enclosed trailer Remove your padlock, sweep the floor and photograph the empty box before return. The [after-hours return](https://route66autorepairshop.com/u-haul-rentals/24-hour-customer-return) page lists the drop steps. If your vehicle felt heavy or ran hot while towing, book a paid [vehicle safety inspection](https://route66autorepairshop.com/diagnostics-and-inspections/vehicle-safety-inspection) before the next trip. ## Frequently asked questions ### Can I lock a U-Haul enclosed trailer? Most renters add a padlock through the rear door latch, and we show you the latch at pickup. Lock it whenever you step away, and keep the key on you rather than in the tow vehicle. ### Is it safe to leave a loaded trailer at a hotel overnight? Many people do it with sensible precautions: a padlock, a lit space near the entrance or a camera, and the trailer left hooked up when the lot allows. Keep valuables, documents and medications in the room with you. ### Can a small business rent an enclosed trailer? Yes. The reservation goes through uhaul.com like any other. Vendors and small businesses often use enclosed trailers to move stock or equipment between sites. --- Call (909) 608-7699 or visit https://route66autorepairshop.com/contact for a written estimate.