Aluminum Round Ceiling Diffuser

Important Size Reminder

Our Round Ceiling Diffuser comes with abundant standard neck duct opening sizes (mm to inch): 3.94"(D100),5.91"(D150),7.87"(D200),9.06"(D230),9.84"(D250),11.81"(D300),13.78"(D350),14.96"(D380),15.75"(D400),17.72"(D450),19.69"(D500),20.87"(D530),21.65"(D550),23.62"(D600),25.59"(D650). Custom neck dimensions & custom powder coating colors are available upon your request. Please measure your ceiling duct diameter before ordering for perfect installation matching.

Premium Aluminum Material & Standard Finish

Constructed from high-quality solid aluminum alloy for anti-rust and long service life. Standard factory finish is RAL3903 Matte White powder coating; various customized coating colors are supported to match diverse indoor decoration styles for residential and commercial HVAC projects.

Optimized Air Distribution Design

Multi-ring concentric circular structure delivers even, stable airflow dispersion, effectively balancing indoor temperature. Classic round ceiling diffuser design is widely used for supply air ventilation in home and commercial buildings.

Wide Application Scenarios

Ideal HVAC air outlet for bathroom, kitchen, bedroom, living room, garage, office, shopping mall, hotel, airport and stadium ceiling ventilation renovation, works perfectly for both new installation and old vent replacement.

Easy Ceiling Installation

Pre-drilled mounting holes on the diffuser flange for quick wall & ceiling fixation with screws; no complicated auxiliary tools required for field installation.