Stackable vs. Nestable Bread Trays: Which Design Does Your Bakery Need?

If your trays ride back to the bakery empty, you want a stack-and-nest tray, and the number that decides between models is how many empty trays fit in a return load on your dollies. You work that out from two figures makers publish in inches: the nest increment, the height each empty tray adds to a nested stack, and the stack increment, the height each loaded tray adds. Trays that never leave the building empty in bulk can be simple stacking trays.

What do stack, nest and cross-stack mean?

Three different ways one tray sits on another, and makers do not always use the words the same way.

Stacking is the loaded position. The upper tray rests on the walls or rails of the one below, so the product underneath carries no weight. The height each tray adds is the stack increment.
Nesting is the empty position. The upper tray drops partway inside the one below. The height each tray adds is the nest increment, which is always smaller than the stack increment.
Cross-stacking means turning a tray 90 degrees relative to the one below. Depending on the model, that turn can put the tray into a nested position or a stacked one.

Rotation is where trays differ most. Rehrig Pacific’s 27 x 24 tray is sold as a “180 Stack & Nest Bread Tray,” yet its product page says: “Rotate 90° for empty nest position or rotate 180° for multilevel stack position” (Rehrig Pacific, 27 x 24). On that tray the 180-degree turn chooses between stacking heights, and the 90-degree turn is what nests it. ORBIS says of its bakery trays: “When empty, they cross-stack and nest for back room and truck space savings” (ORBIS, bakery trays). Another model can use a stepped rim with no rotation at all.

The practical rule: learn the orientation from the maker’s diagram for your exact model, and train on that, not on the word “180” or “cross-stack” in the product name.

How much space does nesting save?

Work it out from the increments rather than from a ratio on a sales sheet. The two Rehrig Pacific trays below publish both figures, which makes them a useful worked example (specifications checked September 26, 2026):

Tray	Stack increment, loaded	Nest increment, empty	Loaded stack increment ÷ nest increment
Rehrig 27 x 24, high stack position	5.39 in	2.78 in	1.9
Rehrig 27 x 24, low stack position	4.30 in	2.78 in	1.5
Rehrig 28 x 22, high stack position	4.08 in	1.025 in	4.0
Rehrig 28 x 22, low stack position	3.08 in	1.025 in	3.0

Sources for the table: increments from Rehrig Pacific’s product pages for the 27 x 24 tray and the 28 x 22 tray, where the 28 x 22 is described as having a “Unique stepped design” that “provides slots for fully nested, low stack and high stack positions.” The last column is our calculation.

The last column is what a “nest ratio” should mean: how many empty trays fit in the height one loaded tray adds. It changes with the stacking position you use, which a single ratio on a brochure hides. Makers also use the word differently. Drader, for example, describes its bread carriers as having a “3-to-1 stacking ratio, meaning they stack securely when loaded and nest compactly when empty,” and says the design “reduces storage space by up to 66%” (Drader Manufacturing). Ask any maker for both increments in inches and do the division yourself.

To size an empty return, the arithmetic is simple. A nested stack of empties is roughly one full tray height plus one nest increment for each additional tray. Put that height against the height available on your dolly and in your trailer, and check the maker’s limit on how many empties may be nested in one stack; the full trailer calculation is in working out trays per trailer.

Which design fits your operation?

Start from what happens to empty trays.

Your operation	Design that fits	What to compare between models
Empty trays come back on your own trucks	Stack-and-nest	Nest increment, and whether the nested stack is stable on your dollies
Several product heights on the same routes	Stack-and-nest with two stacking positions	Both stack increments against your product heights
Trays stay inside one building and are rarely stored empty in bulk	Stacking tray is enough	Stack increment and price
Automated stacking, de-stacking or washing	Whatever your equipment is built for	The equipment maker's list of compatible trays
Trays go onto a retail display rack	A display or rack tray	Fit with the store's rack

Sources for the table: design logic from the stack and nest definitions above; no source ranks these designs by market share.

Clearance comes first in every row. A stack increment that leaves no room above your tallest product crushes it, and one that leaves too much wastes trailer height; matching the two is covered in matching tray depth to product height.

What goes wrong with stack-and-nest trays?

Orientation errors and wear, both of which you can check for.

A loaded tray set in the nest position drops onto the product below. Rehrig lists “Visual indicators to aid manual stacking” among its trays’ features, which is the kind of aid to look for if your staff stack by hand at speed.

Worn rails and rims stop trays from locking in the stack position, and a tray that no longer locks makes the whole column unstable on a moving truck. The two-tray lock test and the retirement rule are in testing whether a worn tray still locks.

Mixed fleets are the third problem. Trays from different molds, or different generations of the same model, may not nest or lock with each other. If you are buying into an existing fleet, test the new tray on and under the old one, loaded and empty, before you order.

How do you compare two models?

Ask each maker for four numbers for the exact model: outside footprint, stack increment in each position, nest increment, and weight. Divide stack increment by nest increment for the empty-return comparison, check the stack increment against your tallest product, and test both trays on your dollies with your product before you buy. The rest of the purchase decision is laid out in the step-by-step tray buying framework.