4-way aluminum square ceiling diffuser Construction: Outer Frame:T=1.2mm High quality extruded aluminum alloy profile with 27.5mm width border Core:High quality extruded aluminum ally profile Material thickness:0.8mm,1.0mm 1.2mm for option Color: white can also follow customer’s requirement Surface finish: powder coated/Anodized. Size:Face size= neck size+125mm or 145mm Border width:32mm Height:50mm Features: 1. Excellent appearance , fit for supply airflow 2. The multi-layer cone divided the air into many layers of swift puffs, quickly mixing the inlet air and interior together 3.Louvered type core is fixed to frame with aluminum pins loaded with steel springs.Core can be easily removable and interchangeable to allow for maximum flexibility in the installation, maintenance and damper adjustment.4. Dampers can be installed so as to adjust airflow Usage: It is used for supply and extract air applications for bathrooms kitchens and external walls of the buildings. It generally are widely used for air outlet of air conditioner.