60 PPI Uncoated Reticulated Foam
60 PPI Uncoated Reticulated Foam is a compressible open cell polyether polyurethane foam with a nominal cell count of 55–65 ppi (CREST), a density of 1.4–1.6 lb/ft³ ±0.10, and a compression force deflection of 0.4–0.6 psi at 25% per ASTM D3574. It is designed to weep moisture while minimizing the infiltration of drafts, water, dust, and insects into buildings and cavities, and is used inside extrusions and cavities where it is not exposed to UV or sunlight.
Key Properties
- Compression Force Deflection @ 25%: 0.4 – 0.6 psi (ASTM D3574)
- Tensile Strength Min: 20 psi (ASTM D3574)
- Elongation: 160% minimum (ASTM D3574)
- Density: 1.4 – 1.6 lb/ft³ ±0.10 (ASTM D3574)
Note: The manufacturer’s TDS for this grade provides four data properties. No additional properties are listed.
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 1/4″, 3/8″, 5/8″, 1/2″, 3/4″, 7/8″, 1″ | — |
| Material/Substrate | Polyether Polyurethane Foam | — |
| Color | Black | — |
| Cell Structure | Open Cell | — |
| Cell Count | 55 – 65 ppi | CREST |
| Density | 1.4 – 1.6 lb/ft³ ±0.10 | ASTM D3574 |
Mechanical Properties
| Property | Value | Test Method |
| Compression Force Deflection @ 25% | 0.4 – 0.6 psi | ASTM D3574 |
| Tensile Strength Min | 20 psi | ASTM D3574 |
| Elongation | 160% minimum | ASTM D3574 |
Flame & Fire Performance
| Property | Value | Test Method |
| Flame Retardant | Flame retardant available by special request | — |
- General filtering applications inside extrusions and cavities not exposed to UV or sunlight where 60 PPI fine-pore filtration is required
- Weep baffling in commercial and residential construction where very fine particulate exclusion is specified alongside moisture weeping capability
- NEMA enclosure and generator or compressor housing ventilation requiring fine 60 PPI pore filtration within the 1/4″ to 1″ thickness range
- Moisture and air infiltration barriers in building envelope assemblies where finer filtration than the 45 PPI grade is required and the foam will not be exposed to UV
- Draft and air infiltration seals in doors, windows, and access panels where a very fine-pore uncoated reticulated foam is specified
Common industries: construction, fenestration, HVAC, electrical enclosures, industrial equipment.
The 60 PPI Uncoated Reticulated Foam is a fine-pore grade in H-O Products’ uncoated reticulated foam series, with a nominal cell count of 55–65 ppi. It is a compressible polyether polyurethane foam designed for general filtering applications and weep baffling in commercial and residential construction, used inside extrusions and cavities not exposed to UV or sunlight.
The TDS product description states “nominal 45 PPI”; however, the TDS title and cell count (55–65 ppi) confirm this is the 60 PPI grade. The TDS features section states the material is available in charcoal gray; however, the Color row in the technical data table lists Black — both are reproduced here as written on the TDS.
Per the TDS note, the Crest visual PPI standard is the industry accepted nomenclature for defining reticulated foam pore size; however, the air flow is the only quantifiable value for determining PPI for published specifications, and the only exception allowed is if visual PPI is agreed as a standard in advance prior to order submission.
The TDS provides a reduced property set compared to coarser grades: density range 1.4–1.6 lb/ft³ ±0.10, CFD 0.4–0.6 psi at 25%, tensile strength minimum 20 psi, and elongation 160% minimum, all per ASTM D3574. No volumetric air flow rate, compression set, tear strength, air pressure drop, or aging data is listed on the TDS for this grade. Flame retardant is available by special request.
What differentiates the 60 PPI Uncoated grade from the 45 PPI and 80 PPI uncoated grades?
The 60 PPI grade has a nominal cell count of 55–65 ppi and a density range of 1.4–1.6 lb/ft³ — finer than the 45 PPI grade and coarser than the 80 PPI grade (65–80 ppi). Unlike the 10, 20, 30, and 45 PPI grades, which are tested to ASTM D3574-91, the 60 PPI grade is specified to ASTM D3574 without the -91 suffix, and its TDS provides a reduced property set: density, CFD at 25%, tensile strength minimum, and elongation only — without air flow, compression set, tear strength, or aging data.
Why is compression force deflection important for a reticulated foam used in weep baffling and filtration?
Compression force deflection determines how readily the foam compresses to fill a cavity under installation force. The 60 PPI grade has a CFD range of 0.4–0.6 psi at 25% per ASTM D3574, indicating a moderate resistance to compression that allows the foam to conform to its cavity under installation pressure while maintaining consistent contact with cavity walls for reliable fine filtration performance.
What is the service temperature range for the 60 PPI Uncoated Reticulated Foam?
A specific service temperature range is not stated on the manufacturer's TDS for this material. No aging performance data is listed on the TDS for this grade.
Is the 60 PPI Uncoated Reticulated Foam suitable for regulated environments?
No compliance standards are specified on the manufacturer's TDS for this material. A flame retardant formulation is available by special request. The standard uncoated grade is for use in applications not exposed to UV or sunlight, as stated on the TDS.
How should the 60 PPI Uncoated Reticulated Foam be specified?
Specify grade (60 PPI Uncoated Reticulated Foam, cell count 55–65 ppi), thickness, color (confirm Black or Charcoal Gray with H-O Products, as the TDS data table and features section differ), compliance requirements if applicable, dimensional tolerances, and finished format. Per the TDS, air flow is the only quantifiable value for determining PPI for published specifications.
