Joint:High grade PP/PC,to be 360 swiveled,dismantled &assembled easily for cleaning

Joint seal ring:low-friction treated rubber

support spring/center bolt:Stainless steel 304

Adjustable joint knob:High grade PP/PC with a molded-inbrass nut locking with center bolt

Damper:To manually adjust airflow by a knob

dome/cup hood:D375mm/200mm,high grade PP/PC,red,grey& transparent available

Trbe:D75mm PVC/PC

Bracket:High grade PP/PC(ceiling/wall mounted),PP/PC(bench mounted)

Explanation:To fit laboratory safety required,use non-burnable plastic which endure high temperature