The AliWood Sound Barrier SB system uses steel ‘I Beams’ for roadside systems and can span 4.8 metres at a maximum height of 5 metres! AliWood SB will be manufactured to your specifications, ensuring no waste. One length of AliWood SB weighs less than 20KG, thus installation mitigates the need for heavy machinery and expense! All our Sound Barrier Products are manufactured to 6061T6 Grade, ensuring highest quality strength is supplied and no maintenance is required. Fully engineered and approved by Department of Main Roads QLD. The AliWood Sound Barrier SB system is also terrific for retaining walls up to 1.2m high, raised garden beds, garden edging and fencing. Colours range from standard powder coat finishes, to wood grain finishes.