Cavity Batten 45 x 20mm SKU: 225187 Mitre 10 SAvailable at selected stores. Check your local store for details Variants Commonly used to create a cavity space for weather board cladding systems as well as many other possible uses around the home. Features and benefits Merch grade cavity batten. Finger jointed. Machine gauged for ease of installation. H3.1 treated for internal use or where painted or protected from the weather.