Merv 11 Pleated Air Filter - 18 1/4" x 26 1/2" x 1" Quantity:12-pack This is designed to fit

This is designed to fit into 1" Return Air Grilles

the "A+2000" brand Permanent Washable Electrostatic custom air filters are truly quality products

Water resistant lamp connection

if not you can measure it or check the HVAC unit and the owner‰۪s manual

The SpeedLight uses powerful magnets to hold the mounting plate in place

Merv 11 Pleated Air Filter - 18 1/4" x 26 1/2" x 1" Quantity:12-pack This is designed to fitAny Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop, and long service life which reduces HVAC equipment maintenance and energy costs. A higher MERV rating means that the air filter that you are about to purchase possesses a higher amount impurity filtration ability than your ordinary filter.