Plymovent - Economy Arm EA-H = suspended mounting (2-4 m) and EA-S = standing mounting (2-4 m), ball-bearing extraction arm
Plymovent - Economy Arm EA-H = suspended mounting (2-4 m) and EA-S = standing mounting (2-4 m), ball bearing mounted extraction arm with spring supported support structure, demountable hood with mesh and air control flap, see variants.
