The Palram 701338 Automatic Mechanical Vent Opener is a reliable and durable greenhouse accessory designed for easy operation. Made from polycarbonate material, this vent opener is durable and built to last. With a sleek silver color and a height of 32 inches, it fits seamlessly into any greenhouse setup. The manufacturer warranty of 2 years ensures peace of mind, and the inclusion of fixings and a base make installation a breeze. This automatic vent opener from Palram is a top-quality product crafted in Israel, perfect for maintaining optimal ventilation in your greenhouse.