Pallet Supply USA

Materials · 6 min read

Nine blocks: an argument for block pallets in closed loops

The strength argument is real and it is not the important one. What decides block versus stringer over a fleet's life is what happens when something breaks.

Marcus ElleryYard & Grading Lead

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01The argument people make

Block pallets carry more. Racked capacity of 2,500 to 3,300 lb against 1,800 to 2,500 for a comparable stringer pallet, and a much better racked-to-static ratio — around 43% versus 33%. That is because a block pallet never cuts a hole in a load-bearing member.

True, and for most operations it is not the deciding factor, because most loads are nowhere near either limit.

02The argument that actually decides it

Repair. When a block pallet is damaged, I cut out one block and fit a new one. The deck structure is untouched and the pallet leaves the shop at the grade it arrived at.

When a stringer pallet has a cracked stringer, I have two options: fit a companion — which works, adds three to five pounds, and drops it from Grade A to Grade B — or dismantle it. There is no repair that returns it to what it was.

DamageStringer palletBlock pallet
Cracked structural memberCompanion stringer, grade dropsReplace one block, grade holds
Broken deck boardReplace boardReplace board
Broken notchPlug, grade dropsNo notches to break
Corner damageOften terminalReplace corner block
Typical service trips5–78–11

Over a fleet on a repair programme, that difference lands in the annual repair bill within a year. It is precisely why every serious pooling operation in the world standardises on block construction, and pooling companies are the most cost-disciplined pallet buyers there are.

03The break-even

Roughly three round trips. Below that, the stringer pallet's lower purchase price wins because you are not around long enough to consume the durability. Above it, the block pallet's cost per trip falls below and keeps falling.

Excluding repair. Include repair costs and the crossover moves earlier, because block repairs are cheaper and preserve grade.
TripsStringer at $13Block at $16Winner
1 (one-way)$13.00$16.00Stringer
3$4.33$5.33Stringer
5$2.60$3.20Stringer
7$1.86$2.29Stringer
9$1.86 (2nd pallet)$1.78Block
11$2.36$1.45Block
Excluding repair. Include repair costs and the crossover moves earlier, because block repairs are cheaper and preserve grade.

04The value buy nobody notices

Recovered block pallets are one of the better items in our whole catalogue and they get overlooked because buyers assume block means expensive.

A recovered Grade A block pallet was built to a specification designed to survive a pooling system — heavier lumber, better fasteners, tighter tolerances than anything built for one-way freight. It usually has most of that life left. At $14 to $23 it is not cheap against a $13 stringer pallet, but against what it would cost new it is a substantial discount on a substantially better product.

Availability is the constraint. Block pallets tend to stay inside closed systems rather than entering the open recovery stream, so supply is lumpier than stringer stock. Port markets — Los Angeles, northern New Jersey — are the best places to find them, because imported freight arrives on block pallets that mostly do not go home.

A short stack of six different used pallets showing the variety of construction and branding, including a blue CHEP pallet and a PECO-stamped pallet.
Six pallets, six conditions. The blue CHEP and the PECO deck in this stack belong to pooling companies — we sort those out and return them rather than buying them.
Close-up of weathered wood pallets stacked outdoors, with an IPPC heat-treatment stamp reading US 163579 HT visible on a stringer, and blue pool pallets alongside.
An IPPC mark on a stringer — country, facility number, treatment code. This one reads US 163579 HT.

Vocabulary

Terms this article uses

Pulled from the text automatically and defined the way the trade uses them.
Block pallet
A pallet using nine solid blocks instead of stringers, giving genuine four-way access for both forklifts and pallet jacks. Stronger and more durable than a stringer pallet, and 15–25% dearer.
Companion stringer
A second stringer nailed alongside a cracked original during repair. Structurally sound, adds 3–5 lb, and disqualifies a pallet from Grade A.
Deck board
Any of the boards forming the top or bottom face of a pallet. Typically 5.5 inches wide and 0.5–0.75 inches thick.
Grade A
Our top recycled tier: no companion stringers, two or fewer replaced deck boards, one plug maximum, squareness within 0.5 inch.
Grade B
Companion stringers permitted, up to five replaced boards, up to three plugs, squareness within 0.75 inch. The most commonly traded recycled grade.
Notch
The cut-out in a stringer allowing fork entry from the side, typically 9 inches long by 1.5 inches deep. Also the most common point of structural failure.
Plug
A wooden insert fitted into a broken notch to restore stringer material. One is permitted in Grade A; three in Grade B.
Pooling
A rental model where a third party owns the pallets and charges per trip. CHEP, PECO and iGPS are the major North American pools.
Stringer
The board set on edge that separates the top and bottom decks of a stringer pallet. Usually 1.5 x 3.5 inches nominal.

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