VFB050C4A1 A new bathroom ventilation solution for the green generation, Delta Breez ventilation fans deliver an aesthetically pleasing ventilation solution that consumes less power and operates more quietly than other leading brands. The Delta BreezGreenBuilder Ventilation Fan marks a new achievement in ventilation for green construction. This compact-size fan 8.25" x 8" x 5.75" operates at 80% less noise and consumes 85% less energy. Energy costs for operating these fans 24/7 for an entire year is as little as $4.21. Featuring DC brushless motor technology. The Delta BreezGreenBuilder is the quietest 4" duct ventilation fan in this size in the market today. Features: -Compact size. -Economy priced performance fan. -Quiet operation at 0.3 sones. -Easy to install. -Low power consumption. -DC brushless motor for extended life. -4" duct. -Tested for 70,000 hours of continuous use. -Energy Star certified. Specifications: -Manufacturer provdies 3 years limited warranty. -Overall dimensions: 8" H x 8.25" W x 5.75" D.