Frazier (cfm/ft²) (cfm/ft² @125 Pa)
Frazier air permeability is the face velocity, in cfm per square foot, through a fabric at 125 Pa (0.5 inH₂O), from ASTM D737. Expressing it as a permeance lets it be compared with Gurley seconds: Frazier ≈ 3.13 ÷ Gurley.
Symbol: cfm/ft² @125 Pa (ASCII: cfm/ft2 @125 Pa)
Quantity: air permeance (air flow per unit area per unit pressure difference)
SI relation: 1 cfm/ft² @125 Pa = 40.64 µm/(Pa·s)
Derivation: 1 cfm/ft² = 0.00508 m/s; at 125 Pa that is 0.00508 ÷ 125 = 4.064 × 10⁻⁵ m/(Pa·s) = 40.64 µm/(Pa·s).
Exact: no, measured or rounded value
Reference conditions. Measured at 125 Pa (0.5 inH₂O) as in ASTM D737; assumes flow proportional to pressure difference.
Typical uses
- Woven and nonwoven filter media
- Airbag, parachute and sailcloth fabrics
- Comparing Frazier with Gurley results
Convert Frazier (cfm/ft² at 125 Pa) to other units
| Conversion | 1 cfm/ft² @125 Pa equals | Reverse |
|---|---|---|
| Frazier to micrometre per pascal second | 40.64 µm/(Pa·s) | micrometre per pascal second to Frazier |
| Frazier to Gurley second | 3.126991894 s/100 mL | Gurley second to Frazier |
| Frazier to Bendtsen | 3584.448 mL/min (Bendtsen) | Bendtsen to Frazier |
| Frazier to millimetre per second at 100 Pa | 4.064 mm/s @100 Pa | millimetre per second at 100 Pa to Frazier |
| Frazier to millimetre per second at 200 Pa | 8.128 mm/s @200 Pa | millimetre per second at 200 Pa to Frazier |
Open the Gurley to Air Permeance Converter (Bendtsen, Frazier) to convert any value between all units.
Sources
- ASTM D737 Standard Test Method for Air Permeability of Textile Fabrics, ASTM International .
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Frazier (cfm/ft²) (cfm/ft² @125 Pa). Retrieved October 29, 2026, from https://scientificconverters.com/units/frazier-cfm-per-square-foot/
IEEE
Scientific Converters, "Frazier (cfm/ft²) (cfm/ft² @125 Pa)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/units/frazier-cfm-per-square-foot/