Circular Ceiling Diffuser

Round ceiling diffusers are made of aluminium sheet; the frame and inner cores are of high-quality aluminium with adjustable inner cores enabling vertical and horizontal airflow directions. A butterfly damper fixed at the rear is adjusted by the screw on the face of the diffuser; the diffuser can be fixed to ceilings or exposed ducts, with optional foam gasket to prevent leakage. The circular design guarantees uniform radial discharge for supply air and is equally suited to return air. Selection tables cover the RCD-VA standard model, RD-VM medium height and RD-VH high ceiling types with effective area, Vk, pressure drop Pt(Pa), throw Lt(m) and NR data in m3/h. Accessories: butterfly damper in plastic or steel with manual control, radial-shaped screw-control damper and screw-type mounting. Finish: powder coated white RAL 9016 (standard); also supplied in concentric-cone design per profile with optional butterfly / GI damper and RAL 9016 finish. Standards & Certifications: ASHRAE, SMACNA Typical Applications: supply and return ceiling diffusers, variable air volume systems, exposed duct installations, residential, commercial and industrial ceilings Key Differentiators: adjustable inner cones; face-adjustable butterfly damper; RCD-VA / RD-VM / RD-VH selection families; uniform 360-degree radial discharge; RAL 9016 powder coat; foam gasket option