The 48x40 GMA Pallet: A Complete Field Guide

Walk into almost any warehouse between Ohio and Oregon and the pallet under the load is probably a 48x40. It is so common that most people never learn its name, its history, or why its board layout looks the way it does. That familiarity is exactly why it's worth understanding: when a size becomes the default, small choices about grade and construction get multiplied across thousands of units.

Where the 48x40 came from

The dimensions aren't arbitrary. In the 1960s the Grocery Manufacturers Association — the GMA in the name — pushed for a standard pallet its members could share across the food supply chain instead of every shipper running a bespoke footprint. Forty-eight inches long by forty inches wide fit neatly against the interior width of a standard trailer and matched the module sizes of grocery cases. The industry standardized, the footprint stuck, and today 'GMA' and '48x40' are used almost interchangeably.

That grocery origin is why you'll also hear it called the grocery pallet. But its reach long ago outgrew the supermarket aisle — it's now the workhorse for general manufacturing, distribution and third-party logistics across the Ohio manufacturing corridor and beyond.

The dimensions, precisely

The nominal footprint is 48 inches (length, along the stringers) by 40 inches (width, across the deck boards). Height is typically around 5 to 6 inches, and a bare pallet usually weighs somewhere in the 30 to 40 pound range depending on lumber and moisture. By convention the stringer dimension is stated first — a habit worth internalizing before you order, which is exactly why we wrote a whole piece on how to measure a pallet.

For the full family of sizes and how the 48x40 sits among them, our size chart lays every footprint out side by side.

How the board layout works

The classic GMA is a stringer pallet with a specific, deliberate deck pattern. Understanding it tells you a lot about why it performs well.

• Three stringers run the 48-inch length — two outer, one center — notched for four-way entry.
• Top deck: seven boards, typically arranged with wider lead boards at the ends and narrower boards between, giving a firm surface without excess wood.
• Bottom deck: five boards, enough to spread load into racking and pallet-jack wheels without adding needless weight.
• Notched stringers let a pallet jack enter the 40-inch faces partially, while forklifts get full access on all four sides.

That seven-top, five-bottom, three-stringer recipe is the reference build. Reclaimed units vary — a repaired GMA might have a replaced lead board or a plugged stringer notch — but the layout is recognizable at a glance, which is part of what makes the size so easy to buy and sell.

Why it dominates

Standardization compounds. Because everyone runs the 48x40, racking, automated conveyors, trailer loading patterns and case dimensions all evolved around it. A standard trailer takes two rows of them down its length with almost no wasted floor. Pallet jacks, forklift forks and stretch wrappers are all sized with it in mind. Once a footprint reaches that level of ecosystem lock-in, the economic gravity is hard to escape — and for most operations, there's no reason to try.

“The 48x40 didn't win because it's perfect. It won because everyone agreed on it — and agreement is worth more than perfection in a supply chain.”

Typical load and where to use it

A sound reclaimed GMA comfortably handles the everyday range of palletized freight — think stacked cases, bagged goods, drums on a slip sheet, or a shrink-wrapped mixed load. It's the right platform for standard inbound and outbound freight, warehouse storage, and most B2B shipping. Where it starts to strain is at the extremes: very heavy point loads, precise automation tolerances, or export flows with strict compliance needs. For load ratings and what 'comfortably handles' actually means in numbers, see pallet load capacity explained.

It is not the only answer. Heavy machinery, oversized sheet goods and certain industry-specific footprints call for other sizes, and if you're comparing platform styles entirely, our pallet types overview is the place to start.

Buying reclaimed 48x40s the smart way

This is where the 48x40's ubiquity pays off directly: because so many enter and leave circulation, the reclaimed market for them is deep, liquid and honestly priced. A sound reclaimed Grade A or Grade B GMA does the same job as a new one for materially less money and a fraction of the embodied carbon.

1. 1Match grade to job. Retail-facing loads want Grade A; standard freight runs fine on Grade B.
2. 2Confirm four-way entry if your equipment needs it — most GMAs have it, but always verify on reclaimed stock.
3. 3Ask about repairs. A plugged stringer or replaced deck board is normal and fine; a cracked center stringer is not.
4. 4Buy in truckload consistency so your racking and wrappers see a uniform footprint.
5. 5Set up a standing supply rather than panic-ordering — the deep GMA market rewards steady buyers.

We keep sorted, graded 48x40s on the ground ready to ship, and we buy your surplus cores back when you're done with them. If you want a truckload spec'd to your exact grade and volume, tell us what you're moving and we'll match it — reclaimed first, honestly.