Shelf Labels And Cart Inserts Macfarlane shelf-edge labels allow quick and easy identification of locations on shelving and pallet racking. In a choice of self-adhesive or magnetic backings the labels come with a handy, pull-away front for easy loading and amending information. Self-adhesive labels provide permanent fixing. Magnetic backed labels offer flexibility of location and are also effective in cold storage areas. Barcodes can be easily scanned through the clear plastic front without removal.