30 PPI PVC Coated Reticulated Foam UL94 HF-1
30 PPI PVC Coated Reticulated Foam UL94 HF-1 is a PVC-coated open cell polyether polyurethane foam with a nominal 30 pores per inch (PPI) cell count, a volumetric air flow rate of 18 cfm ±2, and a density of 1.4 lb/ft³ ±0.10. The material is designed to weep moisture while minimizing the infiltration of drafts, water, dust, and insects into buildings, NEMA enclosures, and generator or compressor housings. The PVC coating provides UV resistance rated as Excellent after 252 hours per ASTM G154, and the foam carries a UL94 HF-1 flame rating.
Key Properties
- Compression Force Deflection @ 25%: 0.55 psi ±0.10 | ASTM D3574-91
- Tensile Strength: 20 lb/in minimum | ASTM D3574-91
- Elongation @ Break: 180% minimum | ASTM D3574-91
- Compression Set @ 50% Deflection: 25% loss maximum | ASTM D3574-91
- Density: 1.4 lb/ft³ ±0.10 | ASTM D3574-91
- UV Resistance, 252 Hours: Excellent | ASTM G154
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Material/Substrate | Polyether Polyurethane Foam | — |
| Color | Black | — |
| Cell Structure | Open Cell | — |
| Cell Count | 30 ppi ±5 | CREST |
| Foam Grade | T-30 | CREST |
| Density | 1.4 lb/ft³ ±0.10 | ASTM D3574-91 |
| Volumetric Air Flow Rate | 18 cfm ±2 | ASTM D3574-91 |
| Air Pressure Drop | 0.15 ±0.05 | ASTM D3574-91 |
Mechanical Properties
| Property | Value | Test Method |
| Compression Force Deflection @ 25% | 0.55 psi ±0.10 | ASTM D3574-91 |
| Tensile Strength | 20 lb/in minimum | ASTM D3574-91 |
| Tensile Strength Dry Heat Loss | 20% maximum | ASTM D3574-91 |
| Elongation @ Break | 180% minimum | ASTM D3574-91 |
| Tear Strength | 5 lb/in minimum | ASTM D3574-91 |
| Compression Set @ 50% Deflection | 25% loss maximum | ASTM D3574-91 |
| Compression Set @ 50% Deflection Autoclave Loss | 25% maximum | ASTM 3574-91 |
| 25% Compression Load Deflection Autoclave Loss | 15% maximum | ASTM D3574-91 |
Flame & Fire Performance
| Property | Value | Test Method |
| UL94 HF-1 | Rated | — |
Environmental Performance
| Property | Value | Test Method |
| UV Resistance, 252 Hours | Excellent | ASTM G154 |
Compliance
- UL94 HF-1 — Rated
- Weep baffling installations in commercial and residential building envelopes requiring finer filtration than coarser PPI grades
- Loudspeaker grille covers and air conditioner filter media at 30 PPI for improved particulate control
- Environmental barrier seals for NEMA enclosures and generator or compressor housings in harsh outdoor conditions
- Architectural drainage and ventilation applications specified for UV and weather durability
- General industrial filtration where moderate airflow and finer pore structure are both required
Common industries: Construction, HVAC, Electronics, Acoustics, Architecture
The 30 PPI PVC Coated Reticulated Foam UL94 HF-1 is a medium-fine, PVC-coated reticulated polyether polyurethane foam designed for applications requiring a finer filtration grade than 20 PPI while maintaining meaningful airflow. With an air flow rate of 18 cfm ±2 and a compression force deflection of 0.55 psi ±0.10, it is suited for loudspeaker covers, air conditioner filters, and weep baffling in commercial and residential construction, as well as enclosures requiring protection from harsh outdoor conditions.
The PVC copolymer coating provides UV resistance and durability widely specified by architects for exterior and semi-exposed installations. The material is rated for use in driving rain, dust storms, and hail environments, providing a moisture-weeping barrier that resists air, insect, and particulate infiltration. Autoclave testing confirms a compression set loss of 25% maximum and a 25% compression load deflection loss of 15% maximum, reflecting dimensional stability under humid and elevated-temperature cycling.
Compliant with UL94 HF-1.
What differentiates 30 PPI PVC Coated Reticulated Foam UL94 HF-1 from the 20 PPI and 45 PPI grades?
The 30 PPI PVC Coated Reticulated Foam UL94 HF-1 provides finer filtration than the 20 PPI grade (18 cfm vs. 22 cfm) with a higher tensile strength of 20 lb/in minimum, while remaining coarser and more open than the 45 PPI grade. This positions it as the optimal choice when improved particulate retention is needed without the reduced airflow of the finest grades.
Why is compression set critical for a reticulated foam used in weep baffling and filtration applications?
Compression set measures the permanent deformation a foam retains after sustained compression. In weep baffling and sealing applications, the foam is typically installed under compression against a frame or housing. A high compression set means the foam will not recover its original thickness over time, reducing sealing effectiveness and allowing increasing infiltration of moisture, insects, and drafts. The 30 PPI PVC Coated Reticulated Foam UL94 HF-1 is rated at 25% loss maximum under standard conditions and 25% maximum under autoclave conditions.
What is the recommended service temperature range for 30 PPI PVC Coated Reticulated Foam UL94 HF-1?
No service temperature range is specified on the manufacturer's TDS for this material.
Is 30 PPI PVC Coated Reticulated Foam UL94 HF-1 suitable for flame-rated environments?
Yes. This grade carries a UL94 HF-1 rating as stated on the TDS.
How should 30 PPI PVC Coated Reticulated Foam UL94 HF-1 be specified?
Specify grade (30 PPI PVC Coated Reticulated Foam UL94 HF-1), thickness, color (Black), compliance requirements (UL94 HF-1), dimensional tolerances, and finished format.
