Rigid Duct 45 Degree Bend Diameters 4, 5 and 6 45º Horizontal Bend 45º Horizontal Bend is part of the rigid duct round range and is designed to achieve the highest possible energy efficiency from our ventilation appliances. Domus rigid duct is manufactured from exacting tolerances to virtually eliminate air leakage and reduce pressure drop. Allow you to change the direction of duct runs Manufactured to exacting tolerances, which virtually eliminates air leakage and minimises pressure drop 4 Rigid Duct 45 Degree Bend Domus EasiPipe 100 is suitable Bathroom, Toilet and Utility room applications Free Area 7,850mm2 5 Rigid Duct 45 Degree Bend Domus EasiPipe 125 is suitable for Bathroom, Toilet, Utility room, Kitchen and Whole House Applications. Free Area 12,266mm2 6 Rigid Duct 45 Degree Bend Domus EasiPipe 150 is suitable for Kitchen, Commercial and Whole House Applications Free area - 17,263mm2