This Cold Frame Greenhouse from Christow is perfect for growing plants from seed and protecting them from the cold all year-round. The frame is made form sustainably sourced wood with UV-stabilised windows, slatted shelves, and a hinged lid and door for easy access. UV Stabilised Polycarbonate The cold frame has polycarbonate windows which are UV-stabilised to prevent them discolouring and warping in the sunlight. They also protect your crops from harmful UV rays