2 x Warning Silage Cutting In Progress Reflective PanelsWarning Silage Cutting In Progress Panels A strong, highly visible pair of roadside warning panels for farmers and agricultural contractors who need to alert approaching traffic during silage work. This pair of Warning Silage Cutting In Progress panels is designed for use where clear roadside warning is needed during silage season. These panels are supplied without frames, making them ideal if you already have suitable frames in place or want to mount