The DARKROOM 2.50 are specially lined with 95% reflective hammered effect mylar fabric (210M) more robust.Increase of the diameter of the tubes from 16 up to 19mm. Pre-equipped for extraction and ventilation, the tents come with equipment bars and accessories to support lamps, and carbon filters. Available in sizes: DR480w (480x240x200cm)DR600w (600x300x200cm).