The Donracks range of modular display storage and industrial racks is manufactured by TMTE Metal Tech, a part of Sudarsan Group of companies, Chennai. Donracks has carved a niche of its own in manufacturing display/storage racks. The company offers Drive-Through Racking. This is similar to Drive-in racking, with the same sort of principle but the system allows access from either side or the truck drives through the block from one aisle to another. Guide rails can be supplied to enable the truck safer access in/out of the aisles. Both drive in and drive through racking can be as much as 8 metres high dependent on the type of truck. The company recommends an average of 8 to 10 pallets deep in order to maintain an efficient turnaround of pallet movement.