What is the purpose of the extra long slot on some toasters?

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2-Slot long slot toaster with one-touch Raise and Lower function; 1600-watts; Extra wide long slots fit up to 4 slices of bread; Blue LED display for toast

Get set for 4 slice toaster long slot at Argos Same Day delivery 7 days a week, or fast store collection  Some four-slice toasters use two long slots instead of four slots The downside is that you may not fit in two slices side-by-side; the upside is that the

spin and spell slot Homewell 2 Slice Long Slot Clear View Toaster with 7 Toast Settings · INR 5789 · Product Details · Features & Benefits · Product Description · About This Item  Sunbeam® offers a wide variety of toasters featuring long-slot, wide-slot, 4-slice and 2-slice options for all your toasting needs