Quiet Register Booster Fan Fits Duct Opening 4" x 10" (Bronze) 10 Speeds Remote Control, 3 Modes, Cooling/Heating - Vent Air Temp Triggered Auto On/Off, Power-off Memory, Corded Electric

A quiet fan system designed for improving wall and floor register airflow from HVAC systems; Ensures every penny spent on your electricity bill contributes to improved comfort; As a year-round practical gadget, this Register Booster Fan will also help in winter months.
SMARTER: With a high-sensitivity temperature sensor and custom-designed smart chip, the fan automatically starts and stops according to your settings, maximizing indoor temperature balance and energy savings - no frequent setup; no need for gimmicky APP - no added burden on your nearly full phone.
QUIETER: Upgraded by a 22-year-experienced team, the high-static-pressure PWM motor ensures efficiency (up to 120 CFM airflow) while minimizing noise (as low as 18 dBA), ensuring a peaceful sleep. Even lower noise? Simply lower the fan speed (10 levels adjustable).
EASIER: Effortless installation, no professional assistance needed. Refined setup steps based on feedback from 1, 000 initial users make it easier than competitors; Minimalist remote control design avoids confusion with panel button operations.
Note: it needs to be plugged into an outlet (wall adapter & 12 ft cord included). SIZE MATTERS! To select the correct size, first remove the existing vent and measure the duct opening. Then, compare your measurements with "PRODUCT SIZE" listed on this page. The models of this, or any other, booster fan are categorized by the size of the DUCT OPENING (for example, 4" x 10"), not the face of the vent cover. Before purchasing, please remove the old vent cover and measure the duct opening. Verify that the duct opening has enough space to accommodate the product neck (Length x Width x
Insertion Depth: 9.72" x 3.93" x 1.96"; check for obstructions, such as steep inward taper, that could stop the neck fitting), and ensure the product face ( 11.54" x 5.51" ) fully covers the duct opening. PRODUCT SIZE OF MODEL 4" x 10": Neck
Insertion Depth: 1.96" - Neck (Length x
Width): 9.72" x 3.93" - Face (Length x
Width): 11.54" x 5.51" (The neck is the section that goes into the vent hole while the face is what will actually cover).
USAGE SCENARIOS AND LIMITATIONS: A register booster fan is designed to complement your home's HVAC system. If your ducts are not properly sealed or insulated, the fan may not enhance your room's comfort as expected