Programmable resistive RAM cells have a resistance that depends on the size of the programmable resistive elements. The device includes an image processor to receive an image, and to generate a display image and a storage image using the received image, a display unit to receive the display image from the image processor, and to display the display image, and an image storing unit to receive the storage image from the image processor and to store the image. This combination of symmetry and asymmetry allows for some control over the permeability of the assembled fabric. Constraints may optionally be added to these registered alternatives, such as specifying a limitation on days of the week andor hours of the day when a particular alternative may be used. The interaction of the at least one bowed sidewall, the varying flange width, and the varying rib thickness allows for optimization of tray resistance to vertical and horizontal stress without increasing the overall outer dimensions of the tray and without substantially decreasing the internal volume of the tray.