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Plastic wedges (15mm) are used during concrete sleeper installation to pack, space and align sleepers within the steel posts — keeping courses level and tight. Sold in a pack of 100 (bulk box of 2000 by quote). Delivered Australia-wide by Retaining Walls Direct.
Written and product-checked by the Retaining Walls Direct team — supplying retaining wall materials across Australia. Last updated: June 2026.
A small but essential install accessory — wedges take up tolerance between sleepers and steel posts so the wall sits straight and level. See how to build a concrete sleeper retaining wall.
| Size | 15mm wedges |
|---|---|
| Pack | 100 per pack (box of 2000 by quote) |
| Use | Packing, spacing & aligning sleepers in posts |
| Brand | Retaining Walls Direct |
Get a quote or contact the team.
What are the wedges for?
Packing and aligning sleepers in the steel posts so the wall sits level and tight.
How many do I need?
A pack of 100 covers a typical residential wall; bulk boxes of 2000 are available by quote.
Can you deliver to me?
We deliver across most of Australia. Send your details for a quote.
