Description
This 20″ × 20″ × 12″ Koch Multi-Flo Synthetic Rigid Cartridge filter (part number 112-661-005) is a MERV 14 rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.
Why a rigid cartridge?
The Multi-Flo is purpose-built for variable air volume applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.
Design and construction
- Media: Extended-surface synthetic pleated media, supported by rigid internal separators.
- Frame: Rugged metal and plastic composite — stands up to vibration and variable airflow.
- Header configuration: Single Header.
- Efficiency rating: MERV 14 per ASHRAE 52.2.
What MERV 14 captures
Sub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.
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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