High-tech German design and engineering - Seamless no-trip entry - Rugged, plant-safe materials ensures long working life - All parts are replaceable - Removable, water-resistant flooring - Double side access - Inlet and outlet tubes - 100 mm (4): 1x Back, 1x left - 150 mm (6): 1x right, 2x left - 200 mm (8): 1x Roof - 2 x 200mm (8) OmniFlow air vents left and right side - 700-micron MicroMesh bug-screens - Tough canvas outer shell - PAR super reflective lining promotes faster growth and higher yields - Super strong 22mm diameter tent polesreinforced, stronger plastic corners - Once closed, unit is entirely sealed and virtually light proof - Total-Blackout Zippers - no need for Velcro flaps.