Storgae Heavy duty rack wall gondola units are available as standard modular units and can be customized according to the merchandiser’s choice. Storage Heavy duty rack wall gondolas in Kovai Racks are available in heights of 3′, 4′, 5′, 6′, 7′ & 8′ and lengths of 2’ (minimum), 2.5’, 3’, 3.5’ & 4’ respectively. The depths are also available in 300mm, 375mm, 450mm, 525mm & 600mm for the modular units.