How to Measure Your Filter
Steps 1 & 2
Measuring Length and Width (L x W). (If your filter is not a square, the smallest measurement goes first).
Step 3
Measure the thickness (Depth) of your filter from front to back.
Step 4
Put Your measurements together (L x W x D).
Actual Size
A filter’s true dimensions.
Example: 19.75” x 19.75” x 1”
Nominal Size
Rounded numbers used by manufacturers.
Example 20” x 20” x 1”
View Detailed Instructions
About Universal Air Filter Company DIY UL94 Foam Filter Media & Frame Kit – Custom Air Filters for Server Racks, Data Centers, Gaming PCs, Electronic Enclosures – Engineering, R&D, Prototyping & Maintenance
Product:
DIY-KIT
Whether you're an engineer prototyping a new enclosure design, a data center technician retrofitting aging equipment, or a hobbyist building a high-performance gaming PC, the Universal Air Filter Company DIY Filter Kit gives you everything you need to design, build, and test custom air filters on your own terms. This all-in-one kit includes UL94-compliant open-cell foam in both 25 PPI and 45 PPI grades, offering a range of airflow resistance and particulate capture options. Also included are polyester and hydrophobic mesh media types, so you can evaluate multiple filtration approaches without sourcing materials separately. Multiple frame materials are provided to allow assembly of both rigid and flexible filter frames, making the kit suitable for standard enclosures, server rack applications, data center infrastructure, gaming PC builds, R&D labs, and industrial electronic equipment. Key Features: - BUILD CUSTOM AIR FILTERS FOR ELECTRONICS – Design and assemble your own air filtration solutions for server racks, data centers, gaming PCs, and electronic enclosures using UL94-rated open-cell foam media in 25 PPI and 45 PPI configurations for flexible airflow and dust capture performance. - MULTIPLE MEDIA TYPES INCLUDED – Kit contains foam, polyester, and hydrophobic mesh filter media, giving engineers and technicians the versatility to test and compare filtration materials for a wide range of dust protection and airflow requirements in a single package. - RIGID & FLEXIBLE FRAME OPTIONS – Includes multiple frame materials so you can assemble both rigid and flexible framed air filters, making it easy to fit and retrofit filtration into existing equipment, enclosures, or custom-built systems without purchasing separate components. - IDEAL FOR ENGINEERING, R&D & MAINTENANCE – Purpose-built for engineers, designers, and technicians who need to prototype, evaluate, and validate air filtration designs before production, or who need on-hand media for field maintenance, repairs, and equipment retrofits. - UL94 COMPLIANT MATERIALS – All foam media meets UL94 flammability standards, making this kit suitable for use in and around sensitive electronic equipment where fire resistance and safety compliance are critical requirements. Additional Specifications: - Piece Count: 1 - Net Content Measure: 4 - Country of Origin: United States - Electronics Indicator: No - Battery Technology Type: Does Not Contain a Battery - Chemical/Aerosol/Pesticide: No - Prop 65 Warning Required: No - Has Written Warranty: No - Ships In Original Packaging: No - Preorder: No
Air Filter Type:
FPR Rating:
Quality:
Captured Particle Size:
Material:
Capacity:
MERV Rating:
SKU:
DIY-KIT
MPR Rating:
GTIN/UPC:
Lead Time:
Business Day
Whether you're an engineer prototyping a new enclosure design, a data center technician retrofitting aging equipment, or a hobbyist building a high-performance gaming PC, the Universal Air Filter Company DIY Filter Kit gives you everything you need to design, build, and test custom air filters on your own terms. This all-in-one kit includes UL94-compliant open-cell foam in both 25 PPI and 45 PPI grades, offering a range of airflow resistance and particulate capture options. Also included are polyester and hydrophobic mesh media types, so you can evaluate multiple filtration approaches without sourcing materials separately. Multiple frame materials are provided to allow assembly of both rigid and flexible filter frames, making the kit suitable for standard enclosures, server rack applications, data center infrastructure, gaming PC builds, R&D labs, and industrial electronic equipment. Key Features: - BUILD CUSTOM AIR FILTERS FOR ELECTRONICS – Design and assemble your own air filtration solutions for server racks, data centers, gaming PCs, and electronic enclosures using UL94-rated open-cell foam media in 25 PPI and 45 PPI configurations for flexible airflow and dust capture performance. - MULTIPLE MEDIA TYPES INCLUDED – Kit contains foam, polyester, and hydrophobic mesh filter media, giving engineers and technicians the versatility to test and compare filtration materials for a wide range of dust protection and airflow requirements in a single package. - RIGID & FLEXIBLE FRAME OPTIONS – Includes multiple frame materials so you can assemble both rigid and flexible framed air filters, making it easy to fit and retrofit filtration into existing equipment, enclosures, or custom-built systems without purchasing separate components. - IDEAL FOR ENGINEERING, R&D & MAINTENANCE – Purpose-built for engineers, designers, and technicians who need to prototype, evaluate, and validate air filtration designs before production, or who need on-hand media for field maintenance, repairs, and equipment retrofits. - UL94 COMPLIANT MATERIALS – All foam media meets UL94 flammability standards, making this kit suitable for use in and around sensitive electronic equipment where fire resistance and safety compliance are critical requirements. Additional Specifications: - Piece Count: 1 - Net Content Measure: 4 - Country of Origin: United States - Electronics Indicator: No - Battery Technology Type: Does Not Contain a Battery - Chemical/Aerosol/Pesticide: No - Prop 65 Warning Required: No - Has Written Warranty: No - Ships In Original Packaging: No - Preorder: No
What is a MERV Rating?
MERV ratings let you know the efficiency and level of filtration that an air filter can handle under normal circumstances. The higher the MERV rating, the finer the particles are that are filtered our of the air in your home. Many air filter retailers use MERV or a similar rating to rate their air filters.
About MERV, MPR and FPR Rating
MERV Rating (Minimum Efficiency Reporting Value):
MERV Rating is the primary rating system used in the industry, both domestically and internationally. Established by the American Society of Heating, Refrigerating, and Air Conditioning Engineers, MERV rates a filter’s ability to capture and hold particles and pollutants.
MPR (Micro-Particle Performance Rating):
MPR Rating is a rating system developed by 3M. It rates the manufacturer’s Filtrete product line and their ability to capture airborne particles smaller than 1 micron.
FPR (Filter Performance Rating):
FPR Rating is a rating system developed by The Home Depot for brands sold through their stores, including Honeywell. It utilizes a color code and number scale (4 to 10) that closely resembles the MERV rating.
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