Fan doors made of HDPE = NO hydraulics!

Poly works on air pressure, unlike heavy steel fan doors that need hydraulics to open/close.

Polyline Industries fabricate Ventilation Bag Protectors (2mm hard plastic sheeting) that is designed to wrap around the outside of any vent bag. They provide protection to the bag in areas where it may be prone to damage from external forces (e.g. damage from trucks).

Vent Bag Protectors are available in standard widths which wrap around to protect approximately two-thirds the diameter of the vent bag.

They can be manufactured to any length, with a minimum of 7 meters. 

Vent Bag Protectors can be complimented by our Fan Silencer & Accessories range, here.


Contact Us today for a free estimate.

Polyduct Ventilation vent bag protectors
Polyduct Ventilation vent bag protectors