What size dump trailer do I need: 6x12 or 7x14?

Key takeaways

• 7x14: 7.17 yd³ level, 9,820 lb payload, 14,000 lb loaded.
• 6x12: 4.44 yd³ level, 6,800 lb payload, 9,900 lb loaded.
• Roof tear-off: about 18 squares per 7x14 load and 11 per 6x12 load.
• Landfills charge by weight, so the bigger trailer saves trips, not tipping fees.
• A 2026 F-150 without weight distribution (5,000 lb) can't tow either one fully loaded.

How do the two trailers compare?

The 7x14 carries about 60% more volume and 44% more weight. The 6x12 is lighter, shorter and cheaper.

Both trailers have hydraulic dump beds, electric brakes and a $250 card hold that's released within 24 hours after check-in. The real differences are capacity and what it takes to tow them. Specs are on each unit's page: 7x14 and 6x12.

Which one fits my job?

Match the trailer to the material. Light, bulky jobs fill the bed. Heavy jobs hit the weight limit first.

Roof numbers assume about 0.4 cubic yards per square of single-layer tear-off. Two layers roughly double the loads. Our roof loads guide goes deeper, and the load calculator handles mixed jobs.

Which one should I get for a cleanout or remodel?

For mixed junk and demo debris, space runs out before weight, so the 7x14 hauls about 60% more per trip.

Mixed construction and demolition debris runs about 417–484 lb per cubic yard. A level 7x14 of it weighs roughly 3,000–3,470 lb, and a level 6x12 about 1,850–2,150 lb. Both are far under payload, so you're paying for space, and the bigger bed means fewer trips to the scale.

A quick way to decide:

• Choose the 6x12 for a single room, a small garage, a few yards of mulch, or a truck that can't tow 14,000 lb.
• Choose the 7x14 for a whole-house cleanout, a roof over 11 squares, a kitchen or bath gut, or any job you'd otherwise split into three runs.
• Choose two trailers when a crew is loading all day. One fills while the other is at the scale.

If you can't decide and your truck can tow it, go bigger. A half-full 7x14 costs $46 more a day than a 6x12 ($48.76 with tax). A second trip costs you hours.

What can my truck tow?

A full 7x14 needs a truck rated for 14,000 lb. A full 6x12 needs one rated for about 9,900 lb.

Tongue weight matters as much as total weight. At 10–15%, a loaded 7x14 puts about 1,400–2,100 lb on the hitch, and a loaded 6x12 about 990–1,485 lb. A 2026 F-150 is rated for 500 lb of tongue weight and 5,000 lb of trailer without weight distribution, so it can't tow either one full. A 2026 Silverado 2500HD (14,500 lb gas, 18,500 lb diesel, brake controller standard) handles both.

Both trailers have electric brakes, and Maryland requires brakes on trailers over 3,000 lb, so you'll need a 7-way plug and a brake controller. The 7x14 takes a 2-5/16-inch ball. Check your truck in the tow checker. Your vehicle's manufacturer ratings and manual always win.

Does trailer size change what I pay at the landfill?

Not directly. Counties charge by the ton, so a ton of shingles costs the same in either trailer.

What changes is the number of scale trips. Every Central Maryland county weighs rented trailer loads, and none opens Sunday. Howard's Alpha Ridge treats rental trailers as commercial, at $106/ton for C&D. Anne Arundel's Millersville site charges $100/ton for rental or double-axle trailers. Baltimore County's drop-off centers don't accept multi-axle trailers, so those loads go to the Eastern Sanitary Landfill: $125/ton, and small C&D quantities only. Prince George's Brown Station Road takes building debris only in trailers up to 4x8 ft, so neither of our dump trailers qualifies there.

If you don't want to make the scale runs yourself, Return It Loaded works with either trailer: we dump it for the county scale price plus $49 ($51.94 with tax). The size you pick then only decides how many times you come back to our yard.

Landfill fees, hours and rules are set by each county or site and can change without notice. We don't control them; call the site before you go.

When is the bigger trailer the cheaper choice?

When it saves a whole trip. Each extra run costs you an hour or more of driving, waiting at the scale and dumping.

Example: a 30-square, single-layer roof. With the 7x14, it's two loads on a day rental: $165 ($174.90 with tax). With the 6x12, it's three loads for $119 ($126.14 with tax). The tipping fees are about the same either way, since the shingles weigh the same. You save $48.76 with the 6x12 and pay for it with a third trip across the county before the landfill closes.

The 6x12 wins when the job is small, your truck is lighter, or space is tight. It's two feet shorter. Either way, park it in your driveway. Howard County limits commercial vehicles on residential streets to 6 hours (Code § 21.232), and Sykesville limits on-street trailers to 48 hours. All our options are on the dump trailer rental page.

Questions

Sources

• Big Tex Trailers 14LP specifications