Diffusers Ergovent RONDO – Frameless Gypsum Diffuser for Seamless Ceilings Ergovent RONDO is a flush-mount round air diffuser crafted from high-density natural plaster, engineered to integrate seamlessly into drywall ceilings. Once installed, plastered, and painted in the exact shade of your ceiling, only a sleek, minimalist circular air slot remains visible. It eliminates unsightly plastic or metal grilles, delivering an elegant architectural finish for modern residential and commercial spaces. Key Advantages: Seamless Integration: Blends completely into the ceiling surface with zero visible frames, seams, or fasteners, painted with standard interior paint. Dirt-Free Ceilings: Advanced aerodynamic airflow engineering directs air downwards rather than across the ceiling plane, preventing dust and dirt accumulation around the unit. Acoustic Dampening: The solid gypsum composite naturally absorbs vibrations and airflow turbulence, offering quieter operation than standard sheet metal or plastic diffusers. Dual Functionality: Fully compatible with both supply and exhaust ventilation systems across standard duct sizes (100 mm, 125 mm, and 160 mm). Effortless Maintenance: The magnetic central cap removes effortlessly, providing fast access to the balancing damper and ductwork for routine servicing. Technical Specifications: Material: High-density cast gypsum, galvanized steel spigot Connection Diameters: Ø100 mm / Ø125 mm / Ø160 mm Installation: 1-layer or 2-layer drywall ceilings Cover Attachment: Industrial neodymium magnets Upgrade your ventilation system with a pure architectural element that performs flawlessly while remaining practically invisible.