The Lonsdale Heavy Duty (HD) concrete sleeper is a smooth, contemporary light grey panel with a subtle ribbed face, suited to modern, minimalist landscape designs.
Each sleeper measures 2350 x 200 x 100mm (L x W x D) and, in a heavy duty (hd) retaining wall configuration, can be used to build walls up to 2.4m high between steel posts.
Manufactured from industry-leading 60MPa concrete (50% stronger than standard 40MPa concrete) with 2 x N10 reinforcing bars running the full length of the sleeper. Engineered and certified to AS3600/2018 for a 50-year design life, and backed by a 20-year product warranty. Made locally at Outback Sleepers’ Lonsdale, SA factory.
Concrete sleepers never rot, warp or attract pests, making them a genuine zero-maintenance alternative to timber for retaining walls, raised garden beds and levelling sloped blocks.
