38mm Single Ply NEO Coated Glass Fabric 4m - 390-0038-0000 Premium quality neoprene coated fabric ducting with cord reinforcement and spring steel helix. Applications : For air movement and fume extraction where extremes of temperature are involved eg plastic granulate dryers & printing machinery • High / low temperature range • Lightweight & highly flexible • Leak proof & kink proof • Smooth bore Use clamp type 208 / 211 (refer to page ???)