32 Thickness required to meet Domestic Building Services Compliance Guide / Part L max permissible heat losses Pipe max. outside Ø (mm) Max Permissible Heat Loss (W/m) Thickness Code m/carton 8 7.06 13 AF-CO-13X010 188 10 7.23 13 AF-CO-13X010 188 12 7.35 19 AF-CO-19X012 92 15 7.89 19 AF-CO-19X015 78 22 9.12 25 AF-CO-25X022 40 28 10.07 25 AF-CO-25X028 32 35 11.08 25 AF-CO-25X035 24 42 12.19 25 AF-CO-25X042 24 54 14.12 32 AF-CO-32X054 12 DOMESTIC BUILDING SERVICES COMPLIANCE GUIDE Length - 2m, Colour - Black, Antimicrobial protection - Microban® Other information and remarks Length tolerance for tubes ±1.5% Thickness tolerance for tubes ≤ 8mm ± 1mm 9 - 18mm ± 1.5mm 19 - 31mm ± 2.5mm > 31mm ± 3mm All AF/ArmaFlex Class O tubes available as SLIT items. Add 0.12 p/m net after discount has been applied. For ordering add -SLT to above codes e.g. AF-CO-19X010-SLT ∙ Not a stock item AF/ARMAFLEX CLASS O