... Ceiling mounted or Wall Mounted, it's optional exhaust fume extractor 1. Lab fume extractor arm: Include diameter 88MM outfall PP pipe, PH & ... rusty resistance.2. Lab fume extractor Joints: 3 detachable joints (PP material), each can be ... steel with EPOXY Powder painting, resistant acidAvailable Options for lab fume extractor 1. Ceiling Column (FBXDGD-200-500, FBXDGD-200-750, ...