DurkeeSox already used for hundreds of supermarkets in the world wide, with much experience in supermarkets, DurkeeSox fabric air ducting know how to design layout to make best air distribution effect. For the supermarket of low space, due to various pipes on the top and shelves on the ground, storey height is very Limited which poses strict restriction on the duct dia.. It is advised to equally disperse the air flow by area to uniformly arrange small ducts in the whole area and make sure the system perpendicular to shelves and parallel to lamp area. For main fabric air duct, the patented Product- rectangle Duct is recommended to be used.In carrefour, duct diameter mostly is controlled within 600 mm. rectangle profile air duct is employed as the main duct with a less than 600 mm thickness. We fully satisfied the operational requirements and resolved several problems for Carrefour via Our system design.