Experience cleaner indoor air with the Flanders 16x20x5 Synthetic Pleated Air Filter. Designed for steady performance in residential HVAC systems, this filter blends durable construction with efficient particle capture to support everyday comfort and allergy relief.
Key features that matter
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MERV 8 rating delivers reliable filtration for common household dust, pollen, and mold spores, helping your living spaces feel fresher without restricting airflow.
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Synthetic pleated media increases surface area for more uniform dust capture and longer service life between changes.
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Pleated design together with metal mesh support and a sturdy beverage board frame keeps the filter rigid and resists sagging in high-airflow environments.
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Truly 4-1/4 inch thick (actual size 15-13/16 x 19-13/16 x 4-1/4) with a nominal 4-1/2 inch depth, offering substantial particle interception while maintaining compatibility with deeper filter slots.
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One-piece, single-filter packaging for straightforward replacement and simple inventory.
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Ideal for allergy-aware households—captures pollen, dust, and mold spores; not designed for smoke or viruses.
What makes this filter unique
Unlike thinner, flat-panel alternatives, this pleated design delivers more surface area in a compact footprint, promoting efficient filtration with less bypass. The combination of synthetic media and metal-backed support means consistent performance over time, even in busy homes with pets or elevated dust levels. The beverage board frame provides a rigid edge that helps maintain a tight seal in the filter housing, so air passes through the media rather than around it.
Dimensions and fit
Nominal size: 16 in W x 20 in H x 5 in deep. Actual size: 15-13/16 in W x 19-13/16 in H x 4-1/4 in thick. This configuration is designed for standard 16x20 filter slots while accounting for real-world manufacturing tolerances. Check your furnace or air handler to confirm fitment before purchase.
Use cases and ideal scenarios
- Homes with seasonal allergies seeking relief from pollen and fine dust.
- Households with pets where dander and shed contribute to particulates in the air.
- General ventilation in living spaces that benefit from cleaner air and reduced irritants.
Maintenance and replacement guidance
For optimum performance, replace the filter according to your system’s usage and air quality conditions. In high-traffic or high-dust environments, consider more frequent changes to maintain airflow and filtration efficiency. Always handle with clean hands and dispose of used filters responsibly.
