Compare selective, double-deep, drive-in, and push-back racking systems by capacity, cost, and selectivity. Choose the optimal system for your warehouse.
Choosing the right racking system is one of the most consequential decisions in warehouse design. Each system trades off storage density against selectivity — the ability to access any pallet at any time. The wrong choice leads to either wasted space or operational bottlenecks.
This racking comparison calculator lets you model four common racking types — selective, double-deep, drive-in, and push-back — side by side. Enter your available area and the calculator estimates capacity, cost per position, and selectivity for each system, helping you match the racking type to your inventory profile.
Whether you operate a high-SKU-count distribution center or a bulk storage facility with few SKUs, this tool helps you evaluate the trade-offs and select the most cost-effective configuration.
Supply-chain managers, warehouse operators, and shipping coordinators rely on precise racking comparison data to maintain efficiency and control costs across complex distribution networks. Revisit this calculator whenever conditions change to keep your logistics plans aligned with real-world performance.
Different racking systems can vary capacity by 50-100% within the same footprint, and costs per position range from $50 to $150+. An informed comparison prevents overspending on unused capacity or under-investing in needed density. This calculator puts the key metrics side by side for quick decision-making. Real-time recalculation lets you model different scenarios quickly, ensuring your logistics decisions are backed by accurate, up-to-date numbers.
Positions = (Usable Area / Position Footprint) × Levels Cost = Positions × Cost per Position Typical footprints (sq ft/position): Selective: 22 | Double-Deep: 16 | Drive-In: 13 | Push-Back: 15 Selectivity: Selective: 100% | Double-Deep: 50% | Drive-In: ~15% | Push-Back: ~25%
Result: Selective: 3,636 | Double-Deep: 5,000 | Drive-In: 6,152 | Push-Back: 5,332
With 20,000 sq ft and 4 levels, selective racking yields 3,636 positions (at 22 sq ft each), while drive-in yields 6,152 (at 13 sq ft each) — 69% more capacity but only ~15% selectivity.
Selective racking is the most common type, offering direct access to every pallet position. It's the most versatile but uses the most floor space per position due to wider aisle requirements. Ideal for operations with many SKUs and frequent picking.
Drive-in racking eliminates aisles between rows, allowing forklifts to drive into the rack structure to place and retrieve pallets. Drive-in has one open end (LIFO) while drive-through has two open ends (FIFO). Both offer excellent density for bulk storage of few SKUs.
Push-back racking uses nested carts on inclined rails. Each new pallet pushes the previous one back. Double-deep racking simply places two selective rows back-to-back. Both offer a middle ground between selective and drive-in density.
Selectivity is the percentage of pallet positions that can be accessed directly without moving another pallet. Selective racking offers 100% selectivity. Drive-in offers about 15% because you must access the front pallet first.
Drive-in racking typically provides the highest density because it eliminates aisles between rows. Pallets are stored 5-10 deep in lanes with a single entry point. This maximizes capacity but limits selectivity.
Push-back is easier to operate and offers slightly better selectivity than drive-in. Forklifts don't enter the rack, reducing damage. However, push-back is typically limited to 2-6 pallets deep and costs more per position.
Match racking type to your inventory profile. Many SKUs with low depth of stock need selective racking. Few SKUs with high quantity need drive-in or push-back. Moderate variety works well with double-deep.
Yes, many efficient warehouses use multiple racking types. Common approaches include selective racking in pick zones and drive-in or push-back for bulk reserve storage in the same facility.
Pallet flow (gravity flow) racking provides FIFO rotation with high density. Pallets are loaded at one end and roll to the other on rollers. It's excellent for perishable goods but costs significantly more per position.