IKEA BILLY Extra Shelf White, Black Oak, Brown Walnut, Oak Effect 36x26,76x26 cm
IKEA BILLY Spare Shelf Board – Add Extra Storage to Your BILLY Bookcase – 36x26 cm & 76x26 cm – Multiple Colours. Size Options: Fits narrow (36x26 cm) and standard (76x26 cm) BILLY units. 76x26 cm – for standard-width bookcases.