These vents are designed for circular ducts are used as distributors and collectors. Directing wings face of the vent can be manually tuned. It can be supplied with a specially developed optional accessories for optimum air flow and air balance adjustment control. Dump wing settings are made with the private key from the front of the grill.
(See table for selection) Display frame surface, circular surface (D), angled surface (A) as return and distributors are made in four different types. Circular duct supply grilles, rear-mounted air currents regulators special angled air discharge shock damper is used to provide volume control at the same time. The next time you open the damper is used in the collector. Grille blades and dampers have the opportunity to set the aperture of the front surface. The countersunk screw according to the mutual opening frame for installation is determined by the aperture plate of the mounting screw holes.
YKM-D (Circular) type of culvert may be changed according to the diameter of each channel. YKM-A (angled) type of culvert used for duct diameters given in the table.