Zenn Click Comfort 30 has a 0.3 mm wear layer, a (2G) locking system, and an integrated underlay. The usage class of the models in this collection is: Residential - 23; Commercial - 32. If you're looking for a quick installation, the Zenn rigid click tiles have an integrated underlay, correcting any unevenness (referring to minimal unevenness; self-leveling compound is recommended) meaning less preparation and speedy installation. The Zenn Click Comfort 30 Plank consists of 4 different stone-look tiles, with dimensions of 914 x 457,2 mm. The total thickness of the models (including the underlay) is 5mm