1. Nominal Size: 19 1/2x19 1/2x1; Actual Size: 19 1/2" x 19 1/2" x 3/4"

2. Designed to filter microscopic particles such as lint, dust mites, spores, and pollen.

3. Simple to install and a cost-effective step towards a healthier home environment. For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months.

4. High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models.

5. Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs. All components are manufactured within the United States and designed with recyclable materials.