The Filtrete 10x20x1 Dust and Lint Electrostatic Air Filter (Model# 307DC-12, Lowe's Item# 5349393) is designed to capture dust, lint, and other large particles to help keep your HVAC system running efficiently. This single filter is in like-new condition with no damage or missing components. Fits standard 10" x 20" x 1" filter openings and is a simple, cost-effective way to maintain indoor air quality.