80 PPI Uncoated Reticulated Foam
H-O Products 80 PPI Uncoated Reticulated Foam is a compressible open cell polyether polyurethane foam with a nominal cell count of 65–80 ppi (CREST), a density of 0.3–0.5 lb/ft³, 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. It is the finest-pore grade and the lowest-density grade in the uncoated reticulated foam series.
Key Properties
- Compression Force Deflection @ 25%: 0.4 – 0.6 psi (ASTM D3574)
- Tensile Strength Min: 12 psi (ASTM D3574)
- Elongation: 150% minimum (ASTM D3574)
- Density: 0.3 – 0.5 lb/ft³ (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 | 65 – 80 ppi | CREST |
| Density | 0.3 – 0.5 lb/ft³ | ASTM D3574 |
Mechanical Properties
| Property | Value | Test Method |
| Compression Force Deflection @ 25% | 0.4 – 0.6 psi | ASTM D3574 |
| Tensile Strength Min | 12 psi | ASTM D3574 |
| Elongation | 150% minimum | ASTM D3574 |
Flame & Fire Performance
| Property | Value | Test Method |
| Flame Retardant | Flame retardant by request | — |
- General filtering applications inside extrusions and cavities not exposed to UV or sunlight requiring the finest available pore structure in the uncoated reticulated series
- Weep baffling in commercial and residential construction where the maximum particle exclusion performance of the uncoated series is specified
- NEMA enclosure and generator or compressor housing ventilation requiring the finest 65–80 ppi filtration within the 1/4″ to 1″ thickness range
- Moisture and air infiltration barriers in building envelope assemblies requiring the finest-pore uncoated reticulated foam for maximum filtration of fine particulate
- Draft and air infiltration seals in precision applications where the lowest density and finest pore structure in the uncoated reticulated series are specified
Common industries: construction, fenestration, HVAC, electrical enclosures, industrial equipment.
The 80 PPI Uncoated Reticulated Foam is the finest-pore and lowest-density grade in H-O Products’ uncoated reticulated foam series, with a nominal cell count of 65–80 ppi and a density of 0.3–0.5 lb/ft³ — significantly lower than all other grades in the series. 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 (65–80 ppi) confirm this is the 80 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: density 0.3–0.5 lb/ft³, CFD 0.4–0.6 psi at 25%, tensile strength minimum 12 psi, and elongation 150% 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. No foam grade designation is listed. A flame retardant formulation is available by request.
What differentiates the 80 PPI Uncoated grade from the 60 PPI and other uncoated grades?
The 80 PPI grade has the finest pore structure in the uncoated series at 65–80 ppi, and the lowest density — 0.3–0.5 lb/ft³ — which is substantially lower than the 1.4–1.6 lb/ft³ of the 60 PPI grade and the 1.4 lb/ft³ of the 10 through 45 PPI grades. Its tensile strength minimum of 12 psi is the lowest in the series, reflecting the more open skeletal structure of its very fine pore count. Like the 60 PPI grade, it is specified to ASTM D3574 without the -91 suffix and provides a reduced property set without air flow, compression set, 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 80 PPI grade has a CFD range of 0.4–0.6 psi at 25% per ASTM D3574. Despite its very fine pore structure, this CFD range is similar to the 60 PPI grade, reflecting the interplay between pore density and the very low bulk density of this grade. Specifiers should confirm installation force requirements given the material's lower density and tensile strength relative to coarser grades.
What is the service temperature range for the 80 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 80 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 request. The standard uncoated grade is for use in applications not exposed to UV or sunlight, as stated on the TDS.
How should the 80 PPI Uncoated Reticulated Foam be specified?
Specify grade (80 PPI Uncoated Reticulated Foam, cell count 65–80 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.
