Manthorpe Universal Roll Panel Eave Vent Tray - 2 x 6m Rolls The Manthorpe Eaves Panel Vents are designed to maintain a flow of air to the roof space from outside, thereby allowing the escape of built-up moisture. The Continuous Roll Panel Eaves Ventilator provides a simple and economical solution to the problems of eaves ventilation. Made from a single strip of vacuum formed PVC, the panel can be rolled out over several rafters to create a ventilated gap beneath the felt running the span of the roof. 325mm Depth Suitable for 400mm, 450mm and 600mm raft centres, the panel has vertical strengthening ribs and is suitable for new build situations. Flexibility makes it suitable for refurbishment where rafter centres are not consistent or unknown.