Barrier Material 2 : A single-layer fabric or a laminated/coated, multilayer material that is considered as a single-layer fabric that limits transfer from the face of the layer to the other side
NFPA 1971 Standard on Protective Ensemble for Structural Fire Fighting, 2000 ed. https://www.nfpa.org/Assets/files/AboutTheCodes/19 71/1971-A2006-ROC-Preprint.pdf, (Std: Prot Ens for Stru Fr Fight - Amer) {428 NFC}