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R-219 — Fiberboard
- Material Id
- Fiberboard
- Record Id
- 219
- Date
- 10/25/1940
- Delta X (in)
- 0.479
- Density (lb/ft3)
- 16.9
- Description
- ½ in.
- Form
- Board
- K W Mk (W/mK)
- 0.372
- Material
- Fiberboard
- Mean Temp (F)
- 90.7
- R Value per Inch (ft2hF/BTU/in)
- 0.387709
- Rsi per Inch (m2K/W/in)
- 0.06828
- Standard
- Nist Srd 81 API
Source: NIST SRD 81 API