Pallet flow racking
Pallet flow racking loads at one end and picks at the other, riding gravity down a lane of rollers so the first pallet in is always the first one out. It answers drive-in's biggest limitation — no FIFO — without giving up much of the density.
Last updated 2026-08-23
Drive-in's density, with FIFO restored
Pallet flow racking is a gravity-fed lane: pallets go in at the high end, roll down a slight decline over a bed of rollers or wheel tracks, and queue at the low end ready for picking. Because loading and picking happen at opposite ends of the same lane, the first pallet loaded is mechanically the first one to reach the pick face — true FIFO, not a process discipline layered on top the way selective racking needs.
On density it sits close to drive-in, since a lane can run many pallets deep, but it needs access on two sides of the run — one for loading, one for picking — the same structural requirement drive-through has. That's the real trade against drive-in: pallet flow buys FIFO by giving up single-side-only access.
The stock profile it suits
Pallet flow is built for the products where rotation actually matters: date-coded goods, food and beverage, anything with a shelf life or a batch traceability requirement. It suits a low-to-moderate SKU count with real depth per SKU, run at a pace where continuous replenishment from the load end makes sense — a distribution centre moving fast-turning stock, not a slow archive.
- Moderate SKU count, meaningful pallets per SKU
- Product where FIFO is a real requirement, not a nicety
- Reasonably consistent, ongoing turnover rather than long-term static storage
Speed control and the mechanical bit
The rollers do the moving, but they're not free-running — flow lanes use speed-control brakes so pallets arrive at the pick face at a safe, steady pace rather than accelerating downhill under their own weight. That braking hardware is the main maintenance point specific to pallet flow that static systems don't have, alongside the usual frame and beam checks any racking needs.
What it costs you
Pallet flow is one of the more expensive systems per position in this silo — rollers, tracks and speed controllers cost more than a welded frame, and the structure needs two-sided access that not every dock and staging layout offers. It's also less forgiving of a mixed or unpredictable SKU range than selective racking; a lane committed to one product doesn't flex easily if that product's volume drops. The payoff is specific and real: density close to drive-in with FIFO the racking itself enforces, which is exactly the combination drive-in can't offer and double-deep or push-back only approach at far shallower depth.
Where it fits against the rest of the silo
If the stock doesn't need strict rotation, drive-in gets similar density more cheaply. If the SKU count is too high or the per-SKU depth too shallow to justify a dedicated flow lane, selective or double-deep will serve the site better. Pallet flow earns its place specifically where FIFO and depth both matter at once — get that combination right in capacity planning before committing, because a flow lane is one of the harder layouts in this silo to reconfigure once built.
Common questions
- How is pallet flow racking different from drive-in?
- Pallet flow loads at one end and picks at the other, giving strict FIFO. Drive-in loads and unloads from the same end, so it's LIFO. Pallet flow needs access on two sides of the lane; drive-in needs only one.
- Does pallet flow racking need power?
- No — it runs on gravity, with mechanical speed-control brakes to stop pallets accelerating down the incline. That's different from shuttle racking, which uses a powered cart.
- What products suit pallet flow racking?
- Anything where rotation genuinely matters — date-coded, perishable or batch-traceable stock — held in real depth per SKU with reasonably steady turnover.
- Is pallet flow racking expensive to install?
- It's one of the higher-cost systems per pallet position in this silo, because of the roller tracks and speed-control hardware, and it needs two-sided building access that not every site has.
Part of our guide to which racking system suits your stock.