2 Piece Sieve Tray Set Plus Extra Base Plus Scoop The Brit-Pet litter tray is designed specifically for use with wood pellet litter. The tray is made up of two parts, with the top section used as a sieve. When Wood pellets gets wet, it breaks down into sawdust particles, which then falls through into the bottom tray when shaken or stirred once or twice a day Dimensions Width 38cm Length 48cm Height 16cm PLUS extra base for rotational cleaning and a scoop Available in 4 colours