Trunking,Sizes:20x10,24x14, 40x18, 60x22, 60x40, 80x40, 100x27, 100x40 Trunking,Features:1)Sizes:20x10,24x14, 40x18, 60x22, 60x40, 80x40, 100x27, 100x402)High resistance to corrosion, not influenced by caustic soil , defend insect andrat. 3)Smooth inner wall, non-flammable, little-smoke, non-toxic, high resistance to impactforce, acid and so on. 4)Trunking and fittings are stainless, so will not ...