Description
Warehouse deal: closeout pricing on overstock inventory. Filters may show minor box wear or cosmetic imperfections from handling and storage. Each lot is inspected before listing and priced accordingly — filtration performance is unaffected. While supplies last.
The Flanders Nested Glass EZ-Green 12″ × 20″ × 1″ is a fiberglass panel filter with nested media layers that increase dust-holding capacity over standard spun-glass panels — while keeping the same low pressure drop and high airflow characteristics.
Understanding the MERV 1–4 rating
Fiberglass media is rated MERV 1 when clean and builds up to MERV 4 as dust loads onto the fibers. That’s not inconsistency — it’s how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. The goal of a MERV 1–4 filter isn’t air quality — it’s equipment protection with maximum airflow. It keeps lint, hair, and large dust out of your coil and blower, which is exactly what older systems, high-airflow applications, and pre-filter duty need.
Construction
- Media: Nested layers of continuous-filament fiberglass with gradient density for progressive dust capture.
- Frame: Heavy chipboard, one-piece moisture-resistant.
- Service life: Up to 60 days under typical use.
Also worth considering
Shopping on price? Our house brand PrimeShield MAX Airflow (MERV 1–4) covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.
Questions on fit, quantity, or a commercial quote?
Need a size that isn’t listed, a different pack count, or a quote for a commercial order? Get in touch — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.
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