... joints and each can be turned 360 degre 1. Lab fume extraction arm: Include diameter 88MM outfall PP pipe, PH & rusty ... White 6. Specification: diameter 88-3/550-450HM-PP Lab fume extraction can be Ceiling mounted or Wall Mounted, it is optional ... steel with EPOXY Powder painting, resistant acidAvailable Options for Lab fume extraction: 1. Ceiling Column (FBXDGD-200-500, FBXDGD-200-750, FBXDGD ...