D-Series HEPA Filter 23 3/8 x 23 3/8 x 12 – 99.97% 2000 CFM

D-Series 99.97% HEPA Filter – 23 3/8 x 23 3/8 x 12 (11.5" Actual) – 2000 CFM

The DAMN Filters D-Series HEPA filter in 23 3/8" x 23 3/8" x 12" nominal size (actual depth 11.5", part number BHH33AGN1D) is a high-capacity commercial HEPA designed for applications requiring true 99.97% efficiency at 0.3 microns. This filter is used to replace common OEM HEPA filters across a wide range of commercial and industrial systems.

Manufactured for consistent performance in commercial and industrial HEPA applications, this filter is commonly used in air handlers, HEPA housings, portable air scrubbers, negative air machines, and other high-efficiency filtration systems that accept a 23 3/8" x 23 3/8" x 11.5" HEPA filter.

This D-Series HEPA filter is commonly used as a replacement for both standard and high-capacity HEPA filters depending on system design and airflow requirements.

This filter is also commonly referenced as a 23.375 x 23.375 x 11.5 HEPA filter for applications using decimal-based sizing instead of fractional dimensions.

Quick Specs

• Series: DAMN Filters D-Series
• Part Number: BHH33AGN1D
• Filter Type: High-Capacity 99.97% HEPA
• Nominal Size: 23 3/8" x 23 3/8" x 12"
• Exact Size: 23 3/8" x 23 3/8" x 11.5"
• Efficiency: 99.97% at 0.3 microns
• Airflow Rating: 2000 CFM
• Filter Media: Microglass HEPA media

Common Uses

• Commercial HVAC systems requiring HEPA-level filtration
• Portable air scrubbers
• Negative air machines
• HEPA housings and containment units
• Hospitals, labs, and controlled environments
• Industrial and commercial HEPA filtration applications

Why Choose the DAMN Filters D-Series?

• Replacement option for common OEM HEPA part numbers
• True 99.97% HEPA efficiency at 0.3 microns
• High-capacity 2000 CFM design
• Designed for commercial and industrial systems
• Commonly used across a wide range of HEPA filtration applications

Performance Notes

Actual airflow capacity and pressure drop will vary based on housing design, sealing, and operating conditions. For best results, this filter should be installed in equipment designed for the actual filter size and correct holding method.

OEM Cross References

This D-Series HEPA filter is commonly used as a replacement option for several OEM and distributor part numbers in this size and efficiency class.

• Grainger 6B615
• Koch H64G2X1
• Koch H64A2X1

Important Fit Note

Please verify actual size, holding method, and gasket orientation before ordering. Commercial HEPA filters are often listed by nominal size but may vary by actual dimensions depending on the housing design.

This is a common replacement for HEPA filters used in air scrubbers, negative air machines, and commercial HVAC systems.

If you are comparing HEPA filters and need a replacement option for common commercial applications, this DAMN Filters D-Series element provides reliable performance with true HEPA efficiency.

DAMN Filters offers a full line of HEPA filters.

HEPA Data Sheet

If you don't see the HEPA filter you are looking for or need help confirming fit, give us a call at (844) 605-3266 or contact us.

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