Using the Juliana automated window openers, you will be sure of a straight temperature inside your greenhouse night and day. They enable thermostatic venting control through the roofing windows of the greenhouse. Although two solar-powered versions can be found, design-building.com only recommends the Univent, which is spring-loaded for a good closure and allows more accurate thermostatic venting control through the roofing windows of the greenhouse. Substitute cylinders can be found. The hydraulic cylinder is certainly warranted for a year and includes a regular life of three to four 4 years, based on atmospheric circumstances.
Univent JUA4021 Respected at $59.95 plus delivery – Sale Priced – $49.00 – Freight Free with Greenhouse Order Replacement Cylinders for Univent JUA4051 are $27.00 each – Sale Costed – $23.00 – Freight Free