Keep your greenhouse or patio from overheating under the hot summer sun with our commercial-grade, 60% green, 8" x 12" knitted shade cloth. The 40% light transmission is perfect if you have delicate plants that don’t require full sunlight. The taped edges with corner brass grommets make installation a snap over your greenhouse roof. It can be used as a wind screen or in any area that requires shade. (Hold-down not included)