The air door comes in five models: single-axis, dual-axis, triple-axis, quadruple-axis, and quintuple-axis. The product specifications include 66 types ranging from 300×400 to 2400×2000. The air door can be horizontally or vertically installed. The square air doors are all self-contained without a drive installation, allowing you to choose between electric or manual devices based on your needs.

Multi-blade steel circular dampers are categorized by nominal diameter, with specifications ranging from DN1000 to DN4000, totaling 18 types. Multi-blade steel circular dampers are used in circular pipelines, and can be used to cut off medium flow or adjust the flow velocity of the medium.

Circular dampers are categorized by nominal diameter, with specifications ranging from DN100 to DN1400, totaling 18 types. The protruding part of the circular damper housing is designed for the installation of a worm gear box. The damper is equipped with a stop pin to ensure the full opening of the baffle.

The damper air door ensures sufficient tightness upon closure, with a leakage rate less than 2% when fully closed.

The air door has sufficient rigidity to prevent deformation and sticking during thermal expansion and contraction. There are sealing measures at the contact points between the shutter-style air doors and between the shutters and door frames, avoiding non-elastic hard contacts.