Slide volume control damper S-VCD

S-VCD volume control damper is manufactured from progressive action galvanized steel, consisting of rounded mounting collar tube and a set of circular sector blades. The damper blades fixed to collar by wield and a central bolts inserted where all the blades  intersected. USing a crewdriver to adjust blades can control the air volume rate .The slide round damper is designed as accessory attached to most round air diffusion products like air round diffusers,circular air grilles, cylinder air louvers, duct air vents,duct air outlets. Variety of sizes are available to meet most ductworks, and generally comes from natural electroplate color