Caravan Motorhome Window Ventilation Stay for PolyPlastic Windows The idea of the unit is to open the caravan window to allow for ventilation while stopping the window from flapping when the opening is too small for the window rods to hold it firm. I have included photographs to show how they work as well as a photograph to show the gap to which the window is left open. The stay has been made to fit PolyPlastic Caravan windows. Please use two stays per window. Packing list 2pcs
