AAF Flanders Varicel II Extended-Surface Mini-Pleat – 24x24x4″, MERV 13, 4-Pack

Description

This 24″ × 24″ × 4″ AAF Flanders VariCel II Extended Surface Mini-Pleat filter (part number 332-510-008) delivers MERV 13 filtration in a rigid extended-surface construction for commercial and industrial HVAC.

The VariCel II uses a mini-pleat extended-surface design — dramatically more filter media in the same footprint, with superior dust-holding capacity in high-humidity and turbulent-airflow conditions.

When VariCel is specified

• Variable air volume (VAV) commercial HVAC — rigid construction holds pleat geometry across the full airflow range
• High-humidity environments — moisture-resistant frame won’t delaminate or warp
• Turbulent airflow — reinforced construction handles velocity variation
• Specialized applications — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation

Design and construction

• Media: Mini-pleat extended-surface synthetic or microfiberglass (MERV-dependent)
• Frame: High wet-strength two-piece die-cut construction
• Header: Single, double, or no-header configurations available
• Efficiency rating: MERV 13 per ASHRAE 52.2

What MERV 13 captures

Very fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.

Need help with sizing or cross-reference?

If you’re replacing an existing filter from a different manufacturer or need help matching the spec, send us your current part number and we’ll confirm the exact match.

Also worth considering

Shopping on price? Our house brand PrimeShield Elite (MERV 13) 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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