Choosing the correct warehouse rack is not only about finding a rack that fits your space. The rack must also be suitable for the size, weight and storage method of your products.
A rack that is too small may limit your storage capacity, while a rack with insufficient loading capacity may become unsafe. On the other hand, choosing an oversized or overly heavy duty system may increase your cost unnecessarily.
This guide explains how to choose the right warehouse rack size and load capacity for warehouses, shops, offices, storerooms and industrial facilities in Malaysia.
Why Rack Size and Load Capacity Matter
The correct racking system helps you:
Maximise available floor and vertical space
Improve stock organisation
Make products easier to access
Reduce unnecessary handling time
Create a safer storage environment
Avoid overloading or damaging the rack
Prepare for future business growth
Before purchasing a rack, you should understand the height, length, depth and loading capacity required for your operation.
1. Measure Your Available Storage Space
Start by measuring the actual area where the rack will be installed.
Important measurements include:
Ceiling height
Floor-to-beam clearance
Available wall length
Walkway and aisle width
Door and roller-shutter dimensions
Lift or staircase access
Location of columns, pipes, electrical panels and fire equipment
Do not use the entire room measurement as the rack size. You must leave sufficient space for movement, stock handling, doors, ventilation and daily operations.
For warehouses using forklifts or pallet jacks, proper aisle width is especially important.
2. Choose the Correct Rack Height
Using vertical space can significantly increase your storage capacity without expanding your building.
Common boltless rack heights include:
150 / 180 / 210 / 240 / 270 / 300 cmHigher rack options may also be available depending on the racking system.
When choosing the rack height, consider:
Ceiling height
The height of your products
How staff will access the upper levels
Whether ladders, pallet jacks or forklifts will be used
Fire-safety and building-clearance requirements
For offices, shops and storerooms, the products should remain easy and safe for staff to reach.
For warehouses, taller pallet racking can help maximise vertical space, but it must be designed according to the building height, pallet size and forklift reach.
3. Select the Right Rack Length
The rack length affects both storage capacity and load capacity.
Common boltless rack lengths include:
60 / 90 / 120 / 150 / 180 cmLonger shelves provide more storage space, but the loading capacity may reduce as the beam span becomes longer.
For example, a shorter rack level may support a heavier evenly distributed load than a longer rack level using the same beam design.
When selecting the length, consider:
Product dimensions
Number of cartons per level
Available wall length
Number of rack bays required
Weight distribution across the shelf
Do not choose the longest rack only for convenience. The rack length should match the actual products being stored.
4. Choose the Correct Rack Depth
The rack depth should be suitable for the size of your cartons, files, tools, containers or pallets.
Common boltless rack depths include:
30 / 45 / 60 cmDeeper rack options are available for long span and pallet racking systems.
Typical recommendations:
30 cm depth: documents, small boxes and light office storage
45 cm depth: retail stock, medium cartons and general storage
60 cm depth: larger cartons, tools, spare parts and heavier goods
90 cm or more: long span shelving, bulky items and palletised storage
A rack that is too shallow may cause products to overhang. A rack that is too deep may waste space and make items at the back difficult to reach.
5. Understand the Load Capacity Per Level
Load capacity refers to the maximum weight that each rack level can safely support.
The required load capacity depends on:
Total product weight per shelf
Number of cartons or items per level
Type of beam and upright
Shelf material
Rack length and depth
Whether the load is evenly distributed
Always calculate the total weight for one complete level.
For example:
If one carton weighs 20 kg and you plan to place 10 cartons on one level:
20 kg × 10 cartons = 200 kg per level
The selected rack should safely support at least 200 kg per level, with a suitable safety allowance.
6. What Does UDL Mean?
UDL stands for Uniformly Distributed Load.
It means the total weight must be spread evenly across the entire shelf.
For example, if a rack is rated for 400 kg per level under UDL conditions, the 400 kg must be distributed across the shelf rather than concentrated in one small area.
Placing one very heavy machine, safe or steel component in the centre of the shelf may create point loading, even when the total weight is below the stated UDL capacity.
Point loading can cause:
Shelf bending
Beam deformation
Uneven pressure
Rack instability
Premature damage
Customers storing machinery, moulds, engines or concentrated heavy items should inform the rack supplier before ordering.
7. Shelf Material Also Affects Your Storage System
The shelf material should match the storage environment and product type.
MDF Board
MDF is a practical and affordable option for general indoor storage.
Suitable for:
Cartons
Files
Dry goods
Office supplies
Light and medium storage
MDF should be kept away from excessive moisture and water.
Plywood
Plywood is stronger and more moisture-resistant than standard MDF, depending on its grade and construction.
Suitable for:
Workshops
Spare parts
Tools
General industrial storage
Areas requiring a stronger timber-based shelf
Metal Shelving
Metal shelves are durable, easy to clean and suitable for many commercial or industrial environments.
Suitable for:
Warehouses
Retail shops
Food-related storage areas
Workshops
Humid environments
Customers who prefer a longer-lasting shelf surface
The loading capacity depends on the complete rack structure, not only the shelf material.
8. Which Racking System Should You Choose?
Boltless Rack
Suitable for:
Homes
Offices
Retail shops
Storerooms
Small warehouses
Tools, cartons, files and loose items
Advantages:
Easy to assemble
Adjustable shelf levels
Cost-effective
Available in multiple sizes and colours
Suitable for manual stock picking
Long-Span Rack
Suitable for:
Medium to heavy cartons
Auto parts
Hardware
Industrial components
Bulky hand-loaded products
Advantages:
Wider beam spans
Higher loading capacity
Suitable for larger and heavier items
Flexible shelf configuration
Pallet Racking
Suitable for:
Warehouses
Factories
Distribution centres
Logistics operations
Palletised products
Forklift-access storage
Advantages:
High load capacity
Maximises warehouse height
Direct access to pallets
Suitable for forklift operations
Customisable according to pallet and warehouse dimensions
9. Common Mistakes When Choosing a Warehouse Rack
Choosing Based on Price Only
10. Information to Prepare Before Requesting a Quotation
To receive a more accurate recommendation, prepare the following details:
Rack height required
Rack length required
Rack depth required
Number of shelf levels
Maximum weight per level
Product or carton dimensions
Product weight
Quantity of racks required
Installation location
Ground-floor or upper-floor access
Lift or staircase availability
Site photos or floor plan
Whether forklift access is required
For pallet racking, you should also provide:
Pallet length, width and height
Maximum pallet weight
Number of pallets
Forklift model or reach height
Warehouse ceiling height
Desired aisle width
Building layout
Professional Rack Supply and Installation in Malaysia
Rack Zone Storage Sdn Bhd provides storage-racking solutions for warehouses, offices, retail shops, factories and commercial facilities.
Our product range includes:
Boltless rack
Heavy-duty rack
Long-span shelving
Pallet-racking systems
Warehouse rack
Shop rack
Office rack
Retail shelving
Mezzanine-platform systems
Customised storage solutions
We serve customers in Kuala Lumpur, Selangor, Klang Valley, Penang and throughout Malaysia.
Our team can recommend a suitable rack size, load capacity and layout based on your products, available space and operational requirements.
Need Help Choosing the Right Rack?
Send us the following information:
Storage-area dimensions
Product size
Product weight
Number of items or pallets
Preferred rack height, length and depth
Installation location
Photos of the site
Rack Zone will help you select a practical and cost-effective storage solution.
Rack Zone Storage Sdn Bhd
Racking Solutions to Maximise Your Storage
Malaysia