Pallet Racking Systems
Pallet racking is the steel structure that holds palletized loads off the floor, on horizontal beams spanning between upright frames, so a forklift can store and retrieve product at height instead of only on the slab.
It's a category, not a product. Selective, drive-in, push back, pallet flow, mobile and shuttle racking are all configurations within it. Below you'll find all of them compared side by side, then what a system is actually made of, how a bay gets sized, what it costs, and what your jurisdiction will want to see before you're allowed to load it.
Hammerhead designs, engineers, permits and installs every system on this page, nationwide.
Which Pallet Racking System Do You Need?
Every system here is a point on one trade: how directly you can reach a given pallet, against how many pallets you can fit in the building. Buy density and you give up access. Buy access and you give up floor. There's no winner, only the one that fits your SKU count, your throughput and how your stock turns.
The short version: if you pick from most of your SKUs on most days, direct access wins. If a handful of SKUs carry most of your volume, go dense on those and keep a selective pick face for the tail. Most real buildings end up running two systems side by side, and that's usually the right answer rather than a compromise.
High SKU variety where you pick from most of what you carry.
- Selectivity
- 100%
- Density
- Baseline
- Rotation
- FIFO or LIFO
- Cost / position
- $80 – $120
Few SKUs, many pallets each, and stock that doesn't move fast.
- Selectivity
- One SKU per lane
- Density
- High
- Rotation
- LIFO (drive-thru is FIFO)
- Cost / position
- $60 – $110
Two to six deep with a pick face per lane. The workhorse middle ground.
- Selectivity
- One SKU per lane
- Density
- High
- Rotation
- LIFO
- Cost / position
- $220 – $400
Date-coded or lot-controlled stock moving at volume.
- Selectivity
- One SKU per lane
- Density
- High
- Rotation
- FIFO
- Cost / position
- $550 – $850
Space-constrained buildings and cold storage, where slow movers are fine.
- Selectivity
- 100%
- Density
- Highest non-automated
- Rotation
- FIFO or LIFO
- Cost / position
- $120 – $220
Deep lanes at volume, without sending an operator into the rack.
- Selectivity
- One SKU per lane
- Density
- Very high
- Rotation
- FIFO or LIFO
- Cost / position
- $300 – $412 + bots
Shuttles that change direction, so one bot serves multiple aisles and levels.
- Selectivity
- One SKU per lane
- Density
- Very high
- Rotation
- FIFO or LIFO
- Cost / position
- Quoted per project
High throughput, high bay, minimal labor in the storage area.
- Selectivity
- 100%, automated
- Density
- Highest
- Rotation
- FIFO or LIFO
- Cost / position
- Quoted per project
Cost is the sell price per pallet position for new equipment and standard hardware. It excludes installation, engineering and permitting, which are real money on top. Note that drive-in comes in below selective per position: density isn't always the expensive option. Full breakdown by system in our pallet racking cost guide.
Head to head
If the tool put two systems close together, these compare them directly on the trade-offs that actually separate them.
What a Pallet Rack System Is Made Of
Almost every configuration in this category is built from the same four things. Once you can name them, quotes stop being opaque, because you can see what one supplier included that another left out.
Upright frames
The vertical towers. Two columns joined by horizontal and diagonal bracing, sitting on footplates that anchor to the slab. A frame is specified by height and depth, and by the gauge and shape of the column steel, which is what actually sets how much it can carry. Frame depth is usually shallower than the pallet is deep so the load bears on the beams.
Frames are the expensive half of the system and the hard part to change later. It is worth buying the height and depth your operation is heading toward, not the one it is at today.
Beams
The horizontals that carry the load. Beams end in a connector that engages punched slots in the frame column, which is what lets you move a level without tools beyond a mallet and a safety clip. Beam capacity is rated per pair, at a given span, for a uniformly distributed load. Two beams that look identical can be rated very differently.
Connector styles aren't interchangeable between systems. Beams that appear to fit a frame from a different manufacturer aren't engineered for it, which is the single most common problem we find when a customer has bought rack from mixed sources.
Decking
What spans between the beams. Wire mesh decking is the common answer because it lets sprinkler water through and doesn't hide a broken pallet. Solid steel decking, pallet supports and open bar grating each solve narrower problems.
In food, pharmaceutical and other sanitation-sensitive operations, wire decks are often installed with the support channel inverted so the open side faces down. That keeps dust and debris from collecting in the channel. It's a housekeeping decision, not a capacity one. Decking, row spacers and accessories →
Anchors and protection
Anchors are structural, not optional hardware. They're what lets an upright resist impact and lateral load rather than relying on product weight, and engineered anchorage is normally a condition of permit approval. The specification depends on slab thickness and condition, seismic design category, and loaded height.
Column protectors, end-of-row guards, row spacers and safety clips are the rest of it. Row spacers do double duty: they tie back-to-back rows together and hold the longitudinal flue open, which is the gap sprinklers need to reach the floor. Guards, bollards and guardrails →
How a Bay Gets Sized
Four decisions, in this order. Getting the order right matters, because each one narrows the next.
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Step one
Measure the load, not the pallet
Everything downstream keys off how tall, wide, deep and heavy a loaded pallet actually is, including any overhang past the pallet edge. Measure your real worst case rather than the nominal one. A load that runs 6" taller than planned removes a beam level from every bay in the building, which is a much larger loss than it sounds like.
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Step two
Work down from the ceiling
Usable height isn't clear height. Start at the deck, subtract the sprinkler drop and whatever clearance your fire protection design requires below the heads, then subtract lights, ducts, building steel and anything else hanging in the space. What is left is what you can build into. That number, divided by your load height plus clearance plus beam depth, is how many levels you get.
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Step three
Pick the beam span off the load width
Beam length has to fit the loads plus flue space between them and at each upright. Two 40" wide loads on a 96" beam is the workhorse configuration in North American distribution. Wider spans hold more per bay and need fewer frames, but beam capacity falls as the span grows, so the trade is real and it gets engineered rather than guessed.
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Step four
Let the forklift set the aisle
Aisle width is set by the truck, and it is usually the largest single consumer of floor space in the building. A counterbalance forklift needs a wide aisle. Reach trucks work narrower. Turret and wire-guided equipment go narrower still, but they bring floor flatness requirements and a different capital cost. This is the decision where density is really won or lost, which is why it belongs in the layout conversation and not at the end of it.
How Much Racking Does Your Building Hold?
Before you can price anything, you need to know how many pallet positions your building will actually give you, and how that number changes depending on which system you put in it. That is the question worth answering first, because it drives everything downstream: how much steel you buy, how much of your floor goes to aisles, and whether going taller is cheaper than leasing more space.
Our capacity calculator does that math against your real dimensions. Enter your footprint, clear height and forklift type, and it places every pallet position for seven different systems so you can see them side by side.
Free, no signup needed to see your results.
What it tells you
- Total pallet positions for selective, push back, drive-in, pallet flow, shuttle, mobile racking and floor stacking, all against your building.
- How many beam levels your clear height gives you once sprinkler clearance comes off the top.
- What each system gains over the way you store product today, as a percentage.
- An interactive 3D view of the layout, and a PDF of the comparison if you want one.
It's a planning tool for comparing systems and framing a budget, not an engineered drawing. Building columns, docks and obstructions come out of a real layout.
Permits, Seismic and Fire Code
This is the part of a racking project that most often goes sideways, and it is almost never the steel. It is that the rack was ordered before anyone asked what the local jurisdiction requires, and the drawings, calculations and inspections turn up after the trucks are already scheduled.
Requirements are set locally. The same rack can be permit-exempt in one county and require a full building permit, stamped seismic anchorage calculations, a high-piled storage fire permit, commodity classification and a special inspection in the next one. Seismic regions raise the bar further, and a jurisdiction that enforces consistently will hold up an occupancy sign-off over it.
We treat permitting as part of the scope rather than something handed back to you after the order. That means the drawings, the engineering, the submittal and the inspections are tracked as project work, on the same schedule as the steel and the install crew.
Worth reading first
- Warehouse racking permits, start to finish →
- Flue spacing and clearance requirements →
- Does pallet racking need to be bolted down? →
- OSHA requirements for pallet rack →
- What to expect in a fire marshal inspection →
- How rack capacity is actually rated →
Free guide
The Facilities Manager's Guide to Warehouse Permitting
What gets submitted, who reviews it, and where the schedule usually slips.
What Drives the Cost
Pallet racking runs roughly $80 to $850+ per pallet position, and where you land inside that range is mostly a question of which system you pick. Selective sits at the bottom, automated deep-lane storage at the top. We publish the full breakdown by system type, including component-level pricing, in our pallet racking cost guide.
What that per-position number doesn't capture is why two buildings holding the same number of pallets can still land a long way apart on total project cost. The steel is rarely what separates them. These are the variables that actually move it, roughly in order of how much they tend to.
New or used components
Used rack can take a meaningful bite out of material cost when the components are a matched, rated and undamaged system. It stops being a saving the moment the capacity can't be established, because unrated rack won't clear a permit. How to decide →
Height and capacity
Taller uprights and higher-rated beams take heavier steel, and taller installations pull more engineering and inspection with them. Going up is usually still cheaper per pallet position than going out, but the curve isn't flat.
Seismic and permitting
The single biggest regional swing. Engineered anchorage calculations, stamped drawings, plan review, permit fees and special inspection are real line items, and they vary more by jurisdiction than by project.
Install conditions
Installing into an empty shell is one number. Installing around live operations, in phases, at night or over weekends is another. So is a slab that needs remediation before anything gets anchored to it. What to expect →
Decking and safety hardware
Wire decks, row spacers, column protectors, end-of-row guards and safety clips add up across a large installation. This is also the most common place for two quotes to differ without it being obvious.
Freight
Rack is heavy and it ships from where it is made. Distance from the production point to your dock is a genuine variable, and it's worth having in the conversation early rather than as a surprise at the end.
We quote the installed, permitted system rather than a parts list, so the number you get is what the project actually takes rather than a material subtotal that grows later. Send us your building and your loads and we'll come back with a layout and a real number.
After It Is Standing
A rack system isn't a one-time purchase, it's a load-bearing structure that gets hit by forklifts. Damaged uprights lose capacity long before they look dangerous, and the inspection that catches it's the cheapest part of the whole lifecycle. OSHA expects employers to keep the structure in safe working order, and insurers and fire marshals increasingly ask to see a documented inspection history.
Plan for it up front. Budget for column protection where traffic is heaviest, keep the load capacity placards current when you re-pitch a beam level, and put a periodic inspection on the calendar rather than waiting for something to look wrong.
5 Reasons Racking Fails Inspection
The findings that come up again and again, and how to prevent them.
OSHA Requirements
What is actually required of you once the rack is loaded and in use.
Rack Protection
Column guards, end-of-row protectors, bollards and guardrails.
Free guide
National Warehouse Inspection Program
Running a documented inspection program across multiple sites.
Pallet Racking FAQs
What is pallet racking?
Pallet racking is a steel storage structure that holds palletized loads off the floor on horizontal beams spanning between vertical upright frames. It lets you store product in the vertical space of a building instead of only on the slab, and it lets a forklift place and retrieve loads at height. "Pallet racking" is the category name. Selective, drive-in, push back, pallet flow, mobile and shuttle racking are all configurations within it, and they differ mainly in how much you can reach directly versus how densely you can store.
What is the difference between pallet racking and selective pallet racking?
Pallet racking is the whole category. Selective pallet racking is one configuration inside it, and the most common one, where an aisle runs beside every row so a forklift can reach any pallet position directly without moving another pallet first. Every selective rack is pallet racking, but most pallet racking isn't selective. Drive-in, push back, pallet flow, mobile and shuttle systems all give up some of that direct access in exchange for storing more pallets in the same square footage.
How many pallets fit in a bay of pallet racking?
A bay holds the number of pallets that fit across one beam level multiplied by the number of levels the upright height allows. A common configuration is two 40" wide pallets per level on a 96" beam, with three to five levels in a 16 to 24 foot upright, which works out to roughly six to ten pallet positions per bay. Your actual number depends on load height, load width, clear height to the sprinklers, and the beam and frame sizes your loads call for. In practice the more useful number is how many positions your whole building holds, which our capacity calculator works out against your real dimensions.
Does pallet racking need a permit?
Often yes, and it depends on the jurisdiction and the installation. Many jurisdictions require a building permit for storage racks above a set height, and a separate fire permit once you cross into high-piled combustible storage. Seismic regions add engineered anchorage calculations stamped by a licensed engineer. The requirements are set locally, so the same rack can be permit-exempt in one county and fully permitted in the next. We handle drawings, calculations and submittals as part of the project rather than leaving it with you.
Does pallet racking have to be bolted to the floor?
In practice, yes. Anchoring is what lets the upright resist forklift impact and lateral load instead of relying on the weight of the product to hold it down, and engineered anchorage is a normal condition of permit approval. The anchor specification depends on the slab thickness and condition, the seismic design category, and the loaded height of the rack, which is why it is engineered for the specific installation rather than taken from a catalog.
What does pallet racking cost?
Cost is driven by more than the steel. The main variables are new versus used components, upright height and beam capacity, how much decking and safety hardware the installation calls for, seismic engineering and permitting in your jurisdiction, freight to the site, and installation labor including whether the work has to happen around live operations or after hours. Two buildings with the same pallet count can land far apart on total cost because of permitting and install conditions. We quote the installed, permitted system rather than a parts list, so the number you see is the number the project actually takes.
Can pallet racking be reconfigured later?
Beam levels adjust. Beams disengage from the upright connector and move to a different elevation, so you can re-pitch a bay when your load heights change. Changing upright height or frame depth is a bigger job because it means new frames. If you expect your product profile to shift, it's worth specifying frame depth and upright height for where the operation is heading rather than exactly where it is today, since those are the two dimensions that are expensive to change later.
Can I reuse existing pallet racking?
Sometimes, and it's worth checking before buying new. The questions are whether the components are a known and matched system, whether the uprights and beams are undamaged, and whether the capacity ratings can be established for the loads you intend to put on them. Mixing connector styles between manufacturers is the common problem, because beams that appear to fit a different upright aren't engineered for it. We inspect, inventory and rate existing rack as part of relocation and liquidation work.
Get a Pallet Rack Layout
Send us your building dimensions and what you're storing. We'll come back with an engineered layout, a pallet count, and a quote that includes permits and installation.