AIRTAP T6 White, Register Booster Fan for 6” x 12” Register Holes, Improves Heating & Cooling Vents, Quiet 10-Speeds. ONLY FITS 6” x 12” DUCT OPENINGS

AC Infinity AIRTAP T6 White, Register Booster Fan for 6” x 12” Register Holes, Improves Heating & Cooling from AC Vents, with 10-Level Speeds

AC Infinity AIRTAP T4 White, Register Booster Fan for 4” x 10” Register Holes, Improves Heating & Cooling Vents, Quiet 10-Speeds, Bluetooth App Control Data Alerts

2 Pack Air & Heat Deflector for Vents, Sidewalls and Ceiling Registers, Adjustable from 8.5" to 15"