Arcadia Lean-to Glass Greenhouse (3 Sizes)Looking for a greenhouse that integrates with and complements your home? The Arcadia model was designed with elegance and function in mind as a lean to option for gardeners seeking a greenhouse that attaches to an existing building. Perfect for compact yards in urban areas and gardeners wishing to minimize heat loss, thereby have a more energy efficient growing space. Features & Benefits 16 gauge, black powder coated aluminum framing 4mm tempered