Double Deep Pallet Racking — +35% Density with Near-Full Selectivity
The smartest middle ground between selective and drive-in. Two pallets deep per side gives 35% more positions on the same floor area — with 50% direct pallet access. Forklift with double-deep reach attachment (pantograph) handles both positions from a single aisle. AME Rack manufactures EN 15512 / AS 4084 / RMI MH16 compliant systems exported to 65+ countries.
Double Deep Racking — Two Pallets Behind Each Other Per Side
Double deep pallet racking (also called 2-deep pallet rack, deep reach racking or reach-in racking) stores two pallets in line behind each other on each side of the aisle. The rear pallet is accessed by a forklift fitted with a pantograph (telescopic reach) attachment that extends the forks an extra 800–1,200 mm into the bay.
Used wherever selectivity loss of 50% is acceptable in exchange for 35% more pallet positions: cold storage, FMCG, 3PL slow-mover reserve, paint and lubricant distributors with medium SKU count (typically 50–500 SKUs in the racking zone with 4+ pallets per SKU).
Why Double Deep Racking Is the Best Density Upgrade from Selective
Eight engineering and operational advantages that explain why double deep is the most-installed semi-selective racking system in mid-volume FMCG, cold storage and 3PL operations.
+35% Density
Add 35% more pallet positions to the same floor area vs selective racking — by eliminating one cross aisle for every two storage rows.
50% Pallet Access
Front pallet 100% accessible like selective; rear pallet accessed via pantograph fork. Far better selectivity than drive-in or shuttle racks.
Low Capex Premium
Rack frame costs only 10–15% more than selective per pallet position — primarily extra beam length. ROI typically 12–18 months on rented floor area.
Cold-Storage Friendly
Reduces cooled / frozen volume by 25–30% vs selective — significant energy saving in -25°C frozen DCs and 2–8°C chilled rooms.
Standard Reach Truck
Works with any reach truck retrofitted with pantograph attachment — no specialised VNA, shuttle or AGV equipment needed.
FIFO Per Row Pair
Behaves as FIFO at the row-pair level: load behind, retrieve in front (when both pallets are same SKU). True FIFO requires careful slotting.
Same Rack Standards
Engineered to identical EN 15512 / AS 4084 / RMI MH16 codes as selective rack — no specialised compliance documentation, easy insurance approval.
Compact Shipping
Component nesting identical to selective rack — average 1,700–2,000 pallet positions per 40HQ container.
Six Double Deep Racking Configurations for Every Application
From standard ambient FMCG to 304 stainless cleanroom and seismic-reinforced LATAM markets — match the upright spec, finish and reinforcement to your environment.
Standard Double Deep
Powder-coated 80 μm, ambient warehouse, 1.2–1.5 T pallets. The volume seller — fits 80% of FMCG, 3PL and consumer-goods projects.
Cold-Storage HDG
Hot-dip galvanised 80–120 μm finish for 2–8°C chilled and -25°C frozen rooms. Q345B steel with -40°C Charpy V-notch ≥27J.
Heavy-Duty 2T
2,000 kg pallet capacity, reinforced upright + double-length safety pins. For ceramic tile, glass bottle, brick and dense FMCG pallets.
Stainless 304
AISI 304 stainless construction — cleanroom, food contact, pharma API and chemical-aggressive environments. 25-year corrosion-free guarantee.
Seismic Reinforced
Heavy bracing, larger baseplates, M20 chemical anchors. Engineered for Zone 3–4 seismic per IBC / NCh 2369 / SBC / NSCP.
Double Deep + Selective Hybrid
One project mixing double deep for top-20% volume SKUs and selective for the long-tail. 25% blended density gain with full SKU coverage.
Engineered Technical Parameters — 4 Standard Configurations
Standard catalogue spec range. All parameters are fully customisable — send pallet weight, building dimensions and forklift / pantograph spec for project-specific engineering.
| Parameter | Light-Duty DD | Standard DD | Heavy-Duty 2T DD | Cold-Storage HDG DD |
|---|---|---|---|---|
| Pallet Load | ≤ 800 kg | 800 – 1,500 kg | 1,500 – 2,000 kg | 800 – 1,500 kg |
| Pallet Depth Capacity | 2 deep per side | 2 deep per side | 2 deep per side | 2 deep per side |
| Pallets per Bay (4-side) | 4 pallets | 4 pallets | 4 pallets | 4 pallets |
| Max Height | 6.0 m | 9.0 m | 11.0 m | 12.0 m |
| Upright Profile | 75 × 75 × 2.0 mm | 100 × 80 × 2.0 mm | 120 × 95 × 2.5 mm | 100 × 80 × 2.5 mm |
| Beam Profile | Box 80 × 50 × 1.5 | Box 100 × 50 × 1.5 | Box 130 × 50 × 2.0 | Box 100 × 50 × 2.0 HDG |
| Steel Grade | Q235B | Q235B / Q345B | Q345B | Q345B (-40°C Charpy) |
| Beam Pitch | 50 mm step | 50 mm step | 50 mm step | 50 mm step |
| Finish | Powder coat 60 μm | Powder coat 80 μm | Powder coat 80–100 μm | Hot-dip galv 80–120 μm |
| Safety Pin | Drop pin | Drop pin standard | Drop pin + safety clip | HDG drop pin |
| Pantograph Reach Needed | 800 mm | 900 – 1,000 mm | 1,000 – 1,200 mm | 900 – 1,000 mm |
| Anchor Spec | M12 × 95 mm | M16 × 110 mm | M20 × 150 mm | M16 × 110 mm HDG |
| Compliance | EN 15512 | EN 15512 / RMI MH16 | EN 15512 / AS 4084 / RMI | EN 15512 + cold-rated |
| Seismic Zone | Zone 1–2 | Zone 1–3 | Zone 1–4 | Zone 1–4 + IBC |
| Service Life | 10 years | 15 years | 20 years | 20 years cold |
| Lead Time | 20 days | 22 days | 28 days | 32 days |
| FOB Price (USD/pos) | $ 50 – 75 | $ 65 – 105 | $ 115 – 175 | $ 145 – 230 |
Every Beam, Brace and Spacer — In-House Manufactured
Ten core components engineered, rolled, welded and coated under one roof at AME Rack's 15,500 m² Dongguan plant. Full bill of materials and replacement-part price list shipped with every order.
Upright Frame
EN 15512 double-leg upright at 100 × 80 mm or 120 × 95 mm box section, slotted at 50 mm pitch for full beam-level pitch flexibility.
Step Beam
Box-section beam 100 × 50 mm to 130 × 50 mm, end-connector with 4 hooks engaging the upright slots. Powder-coated AME Rack orange.
Safety Drop Pin
Mandatory steel pin locks beam to upright slot — prevents beam lift-out under forklift impact during deep-reach pantograph operation.
Baseplate
200 × 150 × 8 mm hot-rolled plate fully welded to upright base, 4 anchor holes for M16/M20 chemical bolts.
Row Spacer
Tubular spacer connecting back-to-back upright pairs. Critical for double deep — sets the gap that pantograph reaches across.
Horizontal Bracing
X-pattern bracing between upright pairs provides longitudinal stability — mandatory per EN 15512 for tall configurations > 6 m.
Column Protector
Yellow HDPE + steel hybrid guard at every aisle-side upright base, 400 mm tall. Replaceable when struck.
Pallet Stopper
Bolt-on rear stopper at the second-deep position — prevents pallet from being pushed past the working zone during pantograph deposit.
Wire Deck (optional)
50 × 100 mm welded wire deck spans the beam pair — recommended for case-pick fronts and fire-sprinkler clearance compliance.
Load Capacity Sign
Aluminium sign at the end of each aisle — bay number, max load per beam level, max pallet weight, total bay capacity. Mandatory under OSHA 1910.176.
Where Double Deep Racking Delivers the Best Density / Access Trade-Off
Eight industries where double deep outperforms selective on density and drive-in on selectivity.
Cold Storage
-25°C and 2–8°C, dense pallet storage with HDG finish, 30% volume cut.
FMCG & Beverage
Bulk SKU buffer for soft drinks, beer, water, dairy — 4 pallets per bay.
3PL Logistics
Slow-mover reserve behind selective pick face — multi-client flex.
E-commerce Reserve
Replenishment buffer feeding selective forward-pick zones upstream.
Manufacturing Buffer
WIP between production line and despatch with semi-selective access.
Tyre Storage
Tyre bulk storage with 2-deep density, reinforced wheel-friendly beams.
Building Materials
Tile, paint, plasterboard distributor — semi-selective FMCG model.
Automotive Parts
Spare-parts DC with high-volume SKUs in rear, low-volume in front.
How to Specify a Double Deep Layout in 3 Decisions
SKU slotting strategy, pantograph reach distance and aisle width drive 85% of total double deep project ROI. Get these three right before sizing uprights.
SKU Slotting — Same-SKU Behind?
The single biggest design decision. Same-SKU 2-deep behaves like FIFO; mixed-SKU 2-deep forces double-handling whenever rear pallet is needed.
- Same-SKU 2-deep — true FIFO, no double-handle
- Mixed-SKU 2-deep — 25–40% double-handle penalty
- Rule: ≥4 pallets per SKU → same-SKU 2-deep works
- Slow movers / unique SKUs → use selective row
Pantograph Reach Distance
The forklift reach attachment must extend 800–1,200 mm beyond standard fork to reach the rear pallet. Verify before buying rack.
- EUR 1200×800 pallets — 900 mm reach
- US GMA 1219×1016 pallets — 1,100 mm reach
- CHEP 1165×1165 pallets — 1,200 mm reach
- Allow 75 mm flue between back-to-back pallets
Aisle Width — Reach Truck + Pantograph
Pantograph reach truck needs same aisle width as standard reach truck — but allow 100 mm extra for safety margin during deep-position deposit.
- Standard reach truck — 2.9 m aisle (DD: 3.0 m)
- Articulated reach — 2.5 m aisle (DD: 2.6 m)
- Wider aisles = faster cycle but less density
- Use spotter mirror on rack frame for safety
| Pallets per SKU | Recommended Slot | Density Gain | Double-Handle Risk | Use Case |
|---|---|---|---|---|
| 1 pallet | Selective only | 0% | None | Unique SKUs, samples |
| 2–3 pallets | Selective preferred | 0% | Low if mixed | Slow movers, long-tail |
| 4–8 pallets | Double deep, same-SKU | +35% | Very low | Standard FMCG, FIFO OK |
| 9–20 pallets | Double deep or push-back | +35% / +50% | Negligible | Bulk SKUs, beverage |
| 21+ pallets | Drive-in or shuttle | +65 / +80% | — | Cold storage mega-SKU |
Double Deep vs Selective / Drive-In / Push-Back / Shuttle — Honest Pros & Cons
Which dense pallet storage solution is right for your warehouse? Compare on density gain, selectivity, capex premium, forklift requirement and FIFO support.
| Factor | Double Deep | Selective | Drive-In | Push-Back | Radio Shuttle |
|---|---|---|---|---|---|
| Density Gain vs Selective | +35% | Baseline (0%) | +65% | +50% | +80% |
| SKU Selectivity | ★★★★★ 50% | ★★★★★ 100% | ★★★★★ | ★★★★★ | ★★★★★ |
| FIFO Capability (same-SKU) | ★★★★★ | ★★★★★ | ★★★★★ LIFO | ★★★★★ LIFO | ★★★★★ |
| Capex Premium vs Selective | +10–15% | Baseline | +20% | +60% | +250–400% |
| Forklift Required | Reach + pantograph | Standard CB / Reach | Specialised CB | Standard | Standard + shuttle |
| Pantograph Capex (per truck) | $12–18K | None | None | None | None |
| Reconfigurability | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ |
| Best For | 4–20 pal/SKU, mid SKU | Mixed SKU, <500/SKU | ≤50 SKU, >20 pal/SKU | 4–6 pal LIFO mix | FIFO + max density |
4–20 pallets per SKU, 50–500 SKUs
You want the biggest density gain (+35%) at the smallest capex premium (+10–15%) — without dropping below 50% selectivity. Sweet spot for FMCG and 3PL.
Reach truck capex unjustifiable
If you don't already own reach trucks and your project doesn't justify USD 12–18K per truck for pantograph attachment, stay with selective. Capex math fails below 800 pallet positions.
4–6 pallet lanes, LIFO OK
Push-back gives more density per lane (4–6 vs 2 deep) and works with any forklift — but capex is 4× higher than double deep and access is LIFO only.
Most-installed hybrid layout
Double deep for fast-mover top 20% volume SKUs; selective for the long-tail. 25% blended density gain with zero handling penalty. Standard in most 3PL DCs.
Real Double Deep Installations Around the World
Three recent projects across three continents — 3PL FMCG, cold-storage retailer DC, and beverage producer. Each shows the rack mix, SKU slotting strategy, lead time and verified ROI metric.
Madrid 3PL DC — Double Deep + Selective Hybrid
Pan-European 3PL needed +25% density on existing footprint without expanding building. We engineered 65% double deep (fast movers) + 35% selective (long tail) hybrid — same powder-coat finish, single supplier. Pantograph attachment retrofitted to existing Linde reach trucks at USD 14K per truck. Payback in 11 months on rented floor area savings.
Incheon Cold Storage DC — HDG Double Deep -25°C
Major Korean retailer converted legacy selective frozen DC to double deep HDG. Hot-dip galvanised 100 μm finish, Q345B steel with -40°C Charpy. Frozen volume cut 28% — annual refrigeration energy saving of 142,000 kWh fully offset the rack capex within 18 months. Zero condensation corrosion after 3 winters.
Bogotá Beverage Bottler — Heavy-Duty 2T Double Deep
Soft-drink producer needed dense buffer for glass-bottle pallets averaging 1,800 kg gross. Heavy-duty 2T double deep with reinforced upright + double-pin safety. NSR-10 seismic engineering with FEA reports stamped by Colombian PE. Glass pallet damage rate dropped from 0.8% to 0.06% vs floor stacking.
How AME Rack Builds Double Deep Racks — 6-Step Production Flow
Owned 15,500 m² Dongguan factory. Steel coil enters one end, container-loaded racking exits the other. Every step in-house — no outsourcing, no hidden margins.
CNC Punching & Cutting
4 high-speed CNC punching lines (Amada / Yawei) cut and perforate uprights from 2.0–2.5 mm Q235B / Q345B cold-rolled steel coil. Hole pattern EN 15512 slot at 50 mm pitch, tolerance ±0.15 mm.
Roll-Forming
15 parallel roll-forming lines run continuously for upright sections, box-section step beams, row spacers, and bracing members. Dedicated lines per cross-section avoid changeover delay.
Robotic Welding
Panasonic / Yaskawa robotic MIG welding for upright frame assembly (uprights + horizontal/diagonal bracing). Full-perimeter weld for beam end-connector to box-beam. ISO 5817 Class B weld inspection.
Acid Pickling & Phosphating
7-stage pre-treatment: alkaline degrease → rinse → acid pickle → rinse → zinc-phosphate → rinse → DI rinse. Surface prep directly affects powder-coat adhesion (≥6N/cm cross-cut test).
Powder Coating or HDG
Powder coat: 60–100 μm DFT epoxy-polyester, AME Rack orange or RAL custom. HDG: 80–120 μm zinc bath dip per ISO 1461 for cold-storage and outdoor environments.
QC, Bundling & Container Loading
Final dimensional QC (random 10% sample), beam load test per EN 15512 (1 per 100 batch), bundled with steel strapping + corner protectors. Direct loading into 20GP / 40HQ containers — average 1,700–2,000 pallet positions per 40HQ.
What to Send Us for a Same-Day Quote — B2B Procurement Checklist
Six inputs are all we need to produce a fully-engineered double deep rack quotation including SKU slotting recommendation. Send what you have — a hand-drawn floor sketch is enough to start.
Building Drawings
Floor plan with column locations, clear height under steel/roof, slab thickness (≥150 mm reinforced concrete), seismic zone, ambient/cold-room boundary.
Pallet & SKU Profile
Pallet dimensions (L×W×H), gross weight (kg), pallet type (EUR / US GMA / CHEP), active SKU count, average pallets per SKU, ABC velocity analysis if available.
Forklift & Pantograph Spec
Existing reach truck make / model, mast type, fork length. Pantograph reach: 800 mm (EUR), 1,100 mm (US), 1,200 mm (CHEP). Pantograph capex USD 12–18K per truck.
SKU Slotting Analysis
Send pallet-volume-per-SKU report. We will recommend the optimal double-deep / selective mix to maximise density without double-handling penalty.
Environment & Finish
Indoor ambient, chilled 2–8°C, frozen -25°C, outdoor canopy. Coastal salt-air? Food contact? HACCP / BRC required? Powder coat or HDG?
Compliance Code
EN 15512 (EU), AS 4084 (AU/NZ), RMI MH16 (US/Canada), local seismic code (IBC, NCh 2369, SBC, NSCP, NTC-DS, SNI 1726, NSR-10).
15 Procurement Questions Buyers Ask Before Placing a Double Deep Rack Order
Answered for facility managers, supply chain heads, and procurement officers comparing 3–5 racking suppliers. If your question is not covered, WhatsApp Lily at +86 188 2453 7792.
01What is double deep pallet racking and how is it different from selective?
02Do I need a special forklift for double deep racking?
03Can I run FIFO with double deep racking?
04What density gain can I really expect vs selective racking?
05What is the MOQ — can I order less than a full container?
06How long is the lead time from PO to ready-for-shipment?
07What payment terms do you accept for B2B buyers?
08Is your double deep rack compliant with EN 15512 / AS 4084 / RMI MH16?
09What steel grade do you use?
10How do I slot my SKUs across double deep and selective?
11Do you supply heavy-duty 2T double deep for glass bottle / ceramic tile pallets?
12Can you handle seismic-zone engineering?
13How much cheaper are you than European / North American brands?
14Do you supply matching accessories — wire deck, column guards, signs?
15What after-sales support do you provide for international buyers?
Ready to Spec Your Double Deep Project?
Send building dimensions, pallet spec, SKU ABC analysis and forklift class — receive a 3D AutoCAD layout, stamped FEA report, full BOM and FOB quotation within 4 working hours. Includes SKU slotting recommendation for optimal density. Zero commitment, English / Spanish / French / Arabic communication available.
