300X - Pleated panel filter series often used where air filter efficiency is at issue. Superior dust holding capacity available with INTERSEPT® antimicrobial. The heavy-duty die cut box frame is made from high strength, moisture resistant beverage board. The pleated media support grid is made from welded wire to ensure pleat shape is maintained throughout the life of the filter. Available in thickness of 1", 2", and 4". The media is a blend of cotton and polyester fibers with efficiencies from 25-60%.

300E - same as 300X except pleat support is made from expanded metal.
Available in 2" and 4" thickness only.

200E - same as the 300E and made with approximately 25 % less media.
Available in 2" and 4" thickness only.

Dirt Demon - Economy grade pleated filter made with a single piece, Kraft pinched frame 25-30% efficient. Available in 1" thickness only.