The Nison Aquila range uses Nison's ' Insert System', whose patented Connectors have been designed to reduce the assembly time by 40 compared to other older structures, as well as to offer a more rigid & stable structure. This great greenhouse has been designed to be affordable & great quality. The 4mm twin wall polycarbonate glazing is a cheaper & more effective alternative to glass the panels help spread light into the greenhouse & is also generally better at insulation, the polycarbonate glazing is also virtually unbreakable. The aluminium frame also requires no maintenance & will make this great greenhouse rigid & long lasting.