... , 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 ... be turned 360 degrees.3. Air flow valve: Can adjust, control air flow and valve angle by ... Powder painting, resistant acidAvailable Options for lab fume extractor 1. Ceiling Column (FBXDGD-200-500, FBXDGD ...