90 Degree Elbow Bend for Blaufast MVHR Semi Rigid Radial Ducting System - Heat Recovery Ventilation

In standard heat recovery ventilation systems 90 deg bends would not normally be required. However, Blaufast RB 75 elbow bends are perfect for using with semi rigid radial duct where tight radius bends are required. Typically, 90 degree bends are used when semi rigid ducts pass from void spaces through 90 degree through wall spaces as space is always at a minimum. 90 Degree bends are easy to fit but require sealing rings for an airtight joint that can be purchased separately. Simply slide the rubber sealing rings over end end of the semi rigid ducting and push into the bend for a tight fit.