These accounts would specify the timing of product delivery, packaging, pallet size, and other features that conformed to their requirements (example one retailer required that Polaroid use a nonstandard pallet size that suite the storage facilities at its central warehouse.) The distribution practices of the large national account had change over time. Where historically Polariod had delivered products to each retail outlet of a large chain, some chains now had their own warehouses and preferred that Polaroid deliver products to a central point.