Our greenhouse ventilation pulleys, with their durable construction, offer a reliable solution to keep your greenhouse well-ventilated, creating an optimal growing environment for your plants. From hobby to professional gardening needs, the ease of use and reliability our pulley system provides is Invest in our pulley system to make ventilation adjustments simple, allowing you to most - your plants. Features -Color:Red -Material:Iron and plastic -Size:10.00X4.60X1.80cm/3.93X1.81X0.71in -The user-friendly design of our pulleys enables even the most inexperienced gardeners to effectively manage airflow and ventilation within their greenhouse. -The efficient ventilation provided by our pulley system allows for optimal growing conditions, promoting plant growth and productivity. -The versatility of our pulley system allows for adjustments to suit different plant needs, ensuring an environment in which all types of plants can thrive. -Our pulleys are designed to withstand different weather conditions, maintaining their smooth operation even in humid or damp environments. -Invest in our pulley and rope system to improve the ventilation within your greenhouse, promoting healthy and productive plant growth. Package list: 4 x Pulleys