Aprilaire 510 ¨C 31

Aprilaire 510 – 31″ x 28″ x 4″ Clean Air Expandable Filter MERV 11 The Aprilaire 510 is designed for geothermal systems and larger HVAC systems. With a MERV 11 rating the 510 will remove dust pollen mold spores bacteria and pet dander from your home while also maintaining a clean system and lasting up to 12 months.