If wanting to purchase multiple items ?

please contact one of the team to design the most effective setup for your needs, weather it is stand alone or joined we are here to help.

Industrial Grade Shelving Extension – Steel Inserts

Price range: $407.01 through $859.26

Fully connectable with our Longspan shelving units to increase your storage capacity.  Add on another full bay or go half the size depending on room and requirements.  Easy to attach to existing units.

We will deliver the frames fully assembled for easy and simple setup! Just slot the beams into the frames at any height needed. No bolts or tools needed! Easy to install yourself or if you prefer, we can do the installation for you.

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Fully connectable with our Longspan shelving units to increase your storage capacity.  Add on another full bay or go half the size depending on room and requirements.  Easy to attach to existing units.

We will deliver the frames fully assembled for easy and simple setup! Just slot the beams into the frames at any height needed. No bolts or tools needed! Easy to install yourself or if you prefer, we can do the installation for you.

  • Secure Transactions
  • NZ Wide Delivery
  • 5 Year Warranty
  • Expert Support
  • Pickup is Available

Key Features

  • Available to fit all of our standard Longspan shelving in both timber and steel inserts.
  • Extensions come with 4 shelves as standard option
  • If you require any other options or customise to suit your needs, please contact us

Frequently Asked Questions

What is the load capacity of this product?
Load capacity depends on which system you choose and how it's configured (beam length, depth, and number of levels). Our long-span shelving is built for heavy duty load, hand-loaded storage, while our cantilever racking (mini and heavy-duty) handles longer, heavier items like timber packs, steel bars, pipe, and tubing. Each product listing shows its specific load rating — if you're unsure which option suits your load, call us on 0800725725 or email sales@southward.co.nz and we'll help you spec the right system.
Can this product be customized?
Yes — most of our shelving and racking can be custom made to your space, including height, depth, and length, and arrives fully assembled for easy setup. If you've got a specific layout or load requirement, we offer a free design consultation to help you spec the right configuration.
Is installation included in the price?
No, installation is quoted separately. Frames arrive fully assembled, so many customers install them themselves — but if you'd rather leave it to us, let us know when you order and we'll include an installation quote alongside your product pricing.
What is the delivery timeframe?
We endeavour to ship next day following order confirmation. Delivery timeframes vary depending on where you are in the country — contact our team for a delivery estimate on your order.
What warranty do you offer?
All Southward storage and shelving products carry a 5-year warranty covering manufacturing defects and workmanship. If something faults under normal use within that period, we'll repair or replace it — just get in touch with your order details.
Do you offer bulk discounts?
Yes — we offer tiered volume discounts on larger orders, so the more you order, the more you save. Contact our sales team with your quantities and we'll put together bulk pricing for you.
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