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Guide · Trailers

Choosing your first trailer: dry van, reefer, flat deck or step deck

Dry van, reefer, flat deck or step deck: what each one hauls, the BC rules that shape it, and a quick helper to choose your first trailer.

By Mainland Truck and Trailer Sales & LeasingLast reviewed 10 min read

Key takeaways

  • Start with the freight you want to haul for years, not this week’s load board: it decides the trailer.
  • A dry van carries boxed and palletized freight; a reefer adds a refrigeration unit for freight that must stay cold or warm; flat and step decks carry loads that go on from the side or above.
  • In BC the vehicle and its load may be 4.15 m high without a permit. A step deck’s lower deck leaves more of that height for the load: the worksheet checks yours.
  • On an open deck every load is tied down to BC’s cargo securement rules, which adopt National Safety Code Standard 10.
  • Before you pay for a used trailer, search its serial number in the Personal Property Registry and ask for its inspection and repair records.

If you bought your truck first and have been pulling other people’s trailers, sooner or later the question becomes which trailer to buy. The four most people weigh are the dry van, the reefer, the flat deck and the step deck. Each one decides the freight you can take, the gear you carry and the rules you work under.

You can see what’s in stock now on our trailers for sale page. This guide goes type by type through what each trailer hauls and what to check on its spec sheet, with the BC rules that shape it. Then a helper narrows it down, and a checklist covers the paperwork before you pay.

Start with the freight, not the trailer

A trailer is a decision you’ll live with for years, so pick it for the freight you want to haul for years, not this week’s loads. Five questions do most of the work:

  1. What freight do I want to be hauling, and for which customers?
  2. Where do I have a skill or a relationship other carriers don’t?
  3. How does it load: at a dock, or from the side or above?
  4. What insurance and upkeep can I carry, month after month?
  5. What can I pay for it, up front or over time?

The four trailers side by side

The four trailers side by side
Dry vanReeferFlat deckStep deck
What it isAn enclosed box with rear doorsAn insulated box with a refrigeration unitAn open deck at one heightAn open deck: a short upper deck over the fifth wheel, a lower main deck behind
HaulsBoxed and palletized general freightFreight that must stay cold or warm, such as foodLumber, steel, building materials and equipmentMachinery and loads too tall for a flat deck
LoadsFrom the rear, usually at a dockFrom the rear, usually at a dockFrom the sides or above, by forklift or craneFrom the sides or above, by forklift, crane or ramps
WeatherClosedClosed and insulatedOpen: tarps when the load needs themOpen: tarps when the load needs them
Securing the loadLoad bars or straps inside the boxLoad bars or straps inside the boxEvery load tied downEvery load tied down
Extra to runNothing beyond the trailerThe refrigeration unit, with its own fuel and serviceStraps or chains, edge protection, tarpsStraps or chains, edge protection, tarps
Height to watchThe van’s own heightThe van’s own heightDeck height plus the loadLower deck height plus the load
We rent itYesNoNoNo

How each type works, in general. Height: Commercial Transport Regulations s. 7.05; securement: Motor Vehicle Act Regulations, Division 35; checked October 5, 2026.

Dry van

The dry van is an enclosed box loaded through the rear doors, usually at a dock. It carries most boxed and palletized freight, and it keeps the load out of the weather. Pick a van if most of what you’re offered is general freight that loads at a dock.

Its size is set by the rules for a tractor semi-trailer: in BC a semi-trailer may be up to 16.2 m long, just over 53 ft, and up to 4.15 m high with its load, without a permit.2 Two vans of the same length can still differ inside: ask for the inside length, width and door opening, the floor rating if forklifts drive in, and the posts or track that hold load bars and straps. Our dry van guide has the full spec sheet list, and we rent dry vans if you want to try a lane before you buy one.

Reefer

A reefer is an insulated van with a refrigeration unit, usually mounted on the front, that holds the load at a set temperature, cold or warm. It carries the freight a dry van can’t: food, produce and anything else that has to stay in a temperature range.

  • The unit is a second machine to run. Ask for its hours, its service records and how it’s fuelled, and budget for its upkeep as well as the trailer’s.
  • Length is measured without it. BC leaves a refrigerator unit attached to the front of a vehicle out of its length.1
  • The box has to be clean. Ask your shippers what records they need: temperatures, cleaning, the loads before theirs.

Pick a reefer if you know temperature-controlled freight, or have customers who ship it, and can keep a second machine running.

Flat deck

A flat deck, often called a flatbed, is an open deck at one height. Loads go on from the sides or above, by forklift or crane: lumber, steel, building materials, equipment. There are no walls, so every load is held on by what you put on it.

  • Securement is the job. BC requires every load to be contained, immobilized or secured so it can’t fall, blow off or shift, and applies National Safety Code Standard 10 to vehicles over 5,000 kg licensed GVW carrying cargo on a highway.3 That means straps or chains of the right rating, edge protection and tarps, and the time to use them.
  • Width is 2.6 m. That’s the most a vehicle and load may be without a permit; load securement devices may stick out up to 10 cm a side beyond it.1
  • Height is the deck plus the load. The total may be 4.15 m. With a roll-up tarp system and its short metal backstops, the vehicle may be 4.3 m including the backstops, but the load still 4.15 m.1

Pick a flat deck if you’ve worked loads like these before, or will learn to, and the freight you want loads from the side or above.

Step deck

A step deck, also called a drop deck, has a short upper deck over the fifth wheel and a longer main deck that sits lower behind it. The lower deck is the point: it leaves more of the 4.15 m height limit for the load, so taller machinery and equipment can stay inside it without a permit.1 Securement is the same work as on a flat deck.

How much taller depends on the deck height on the trailer’s spec sheet. Put it in below with your load’s height to see whether it fits.

Worksheet: your numbers

Will the load fit under 4.15 m?

Use metres from the spec sheet and the load. 1 ft is 0.3048 m. Nothing is saved or sent.

From the ground to the top of the deck the load sits on, loaded, from the trailer’s spec sheet.

From the bottom of the load to its highest point, blocking or cribbing included.

Your result

Overall height

—

Room left under 4.15 m

—

Tallest load this deck can take

—

Fill in your numbers to see the result.

Height limit from the Commercial Transport Regulations, s. 7.05, checked October 5, 2026. Posted signs and low clearances govern where they are lower (s. 7.04(5), 7.05(3)). A guide, not a ruling.

Pick a step deck if the freight you want is taller than a flat deck can carry under 4.15 m, and you have the customers for it.

Which first trailer?

Answer a few questions for a starting point, with the reasons and where to go next.

Decision helper

Which first trailer?

Worked out in your browser; nothing is saved or sent.

  • If you answer

    • Boxed or palletized freight and No

    Our suggestion

    A dry van

    Check the inside size, the floor and the tie-down posts or track against your freight.

  • If you answer

    • Boxed or palletized freight and Yes

    Our suggestion

    A reefer

    Budget for the refrigeration unit as a second machine, and ask your shippers what records they need.

  • If you answer

    • Lumber, steel or building materials and They fit on a flat deck under 4.15 m
    • Machinery or tall equipment and They fit on a flat deck under 4.15 m

    Our suggestion

    A flat deck

    Every load is tied down to BC’s cargo securement rules: budget for the straps or chains, edge protection and tarps.

  • If you answer

    • Lumber, steel or building materials and Too tall for a flat deck
    • Machinery or tall equipment and Too tall for a flat deck

    Our suggestion

    A step deck

    Check the lower deck’s height on the spec sheet against your tallest load.

  • If you answer

    • Lumber, steel or building materials and I need to check
    • Machinery or tall equipment and I need to check

    Next step

    Measure, then decide

    Put the deck height and your tallest load in the worksheet. Under 4.15 m on a flat deck, a flat deck does it; over, look at a step deck.

  • If you answer

    • I don’t know yet

    Our suggestion

    Wait, and keep a record

    Haul for a while, and note what you’re offered, what pays and what you’d rather not do again. Renting a dry van is one way to try a lane before you buy.

A starting point, not advice: your customers and your experience decide.

Before you buy: the checklist

Whichever type you choose, a used trailer comes with a history. Work through these before you pay; your ticks stay in your browser, and you can print the list to bring to the yard.

Before you pay

Buying a used trailer

The trailer, its paperwork, and what it takes to put it on the road.

12 items to check.

The trailer
  • BC allows a semi-trailer up to 16.2 m long, 2.6 m wide and 4.15 m high with its load, without a permit.

Its paperwork
On the road

Sources checked 5 Oct 2026. The official sources govern; check them before you rely on a row.

Paying for it

Financing through our sister company Blue Capital Equipment Finance Ltd., an affiliated broker, at the same Surrey yard. Leasing and buying a trailer differ in cash flow, ownership and tax, and Blue Capital’s guide, should you lease or buy your next trailer?, walks through them. For open decks, it also has a guide to flatbed and step deck financing.

  • Calculator

    Truck payment

    Work out the monthly payment on a truck, trailer or chassis before you apply. Start from our estimate rate, then change the…

  • Page

    Trailer financing

    Financing for trailers from our yard, through our sister company, on approved credit.

Want to own it over time instead? Lease-to-own on trucks, trailers and chassis is another way; the lessor is named in each agreement.

From our family to yours: pull what fits your work.

FAQ

First trailer questions

Which trailer is easiest to start with?

The one that fits the freight you want to haul. If most of it is boxed or palletized general freight that loads at a dock, that’s a dry van; the helper above walks through the rest.

Do you rent reefers, flat decks or step decks?

No. We rent dry van trailers and container chassis. The other types are for sale when they’re on the yard: see trailers for sale.

How tall a load can a step deck carry?

It depends on the deck height. In BC the vehicle and its load may be 4.15 m high without a permit (Commercial Transport Regulations, s. 7.05), so the tallest load is 4.15 m minus the deck height, less if a sign posts a lower clearance. The worksheet above works it out.

Does a trailer need a CVI?

Yes. A commercial trailer’s inspection decal runs to the last day of the 12th month after it was issued, or 6 months with a dump box or used with a logging truck (Motor Vehicle Act Regulations, s. 25.14).

How do I finance a trailer?

Through our sister company, Blue Capital, on approved credit. See trailer financing, or estimate a payment with the payment calculator.

On the yard now

Trailers for sale

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Live from the yard: the list changes as units sell.

Trailers

Bring your spec list to the yard.

See what’s on the yard now, or tell us what you’re looking for.