... use. 2, Thickness: 21mm (3 x 7mm),27mm (3 x 9mm). 3, Material: Fir/Spruce. 3 Ply Shuttering Board (for concrete use), 3 Layer Shuttering Panel, concrete ... x 500 mm 2000 x 1000 mm 2500 x 500 mm 3000 x 500 mm 4000 x 500 mm 6000 x 500 mmThickness: 21mm (3 x 7mm),27mm (3 x ...