This splash-back is real aluminium, and is available in 4 widths, 2 inch (5 cm) 3 inch (7.5 cm), 3 1/2 inch (9cm) and 5 inch (12.5 cm). The two smaller sizes are suited to our standard 2 inch and 3 inch hobs, while the larger sizes are for use with our two sizes of range, standard and large. All splash-backs are 2 1/2 inch 6.5 cm) high, and designed to sit under the "glass" of an extractor if desired. They can be shortened if necessary (score and split off excess).
You can check that the size of the splash-back you are purchasing is correct by checking the size of the range/oven (if you are purchasing a range from elf) on the corresponding product page.