WhisperValueDC Transfer Register Box for room-to-room powered ventilation, wall mount, 2x4 construction

• Durable and Code Compliant: Made of 26-gauge steel, this fire code-rated accessory enables powered 60 CFM transfer at less than 0.3 sone when coupled with the FV-05VS3 WhisperValue fan (sold separately)
• Ventilation Flexibility: Works with standard size HVAC registers with 4' x 10' supply; Ideal for use with continuous and spot ventilation in residential and light commercial construction, including single and multifamily homes and renovation/remodeling