Air filter

means a disposable or reusable air-cleaning device with filtering media encased in a frame of a nominal depth of no greater than 6.0 inches used for removing particulate matter from the air and designed for installation in residential ducted systems.

(1) Air filter does not include:

(A) Electronic air cleaners;

(B) Filter media sold as rolls not encased in a frame;

(C) Air filters designed and sold exclusively for installation in products other than residential ducted systems..