1.Plastic slat is made from steady and anti-corrosive PVC material 2.Ingenious and all-plastic adjustable leg structure 1.Beam is made of reinforced and anti-aging PVC material,sturdy and durable,antirust and anticorrosion2.Ingenious and all-plastic adjustable leg structure,which make beam and slat join together easily,sturdy and durable,anti-rust and anti-corrosive plastic slat and support