Product Detail Solid state power supply is self-regulating and maintains peak efficiency during a wide range of cell dirt loading conditions; controlled by built in air control switch Cabinet can support weight of residential furnace and evaporator coil. Galvanized cabinet protects against rust. Requires no maintenance except periodic cell washing. Electronic cell can be washed in most home dishwashers. Permanent wash reminder schedule included for mounting in convenient location. Neon light next to on-off switch tells if air cleaner is powered and if high voltage is present. Duct dimensions: 16" x 25" . The "Honeywell F50F1214 Electronic Whole House Air Cleaner" is best product for you. We recommended Honeywell F50F1214 Electronic Whole House Air Cleaner