This Super Digital Inverter 4 way cassette has been designed to suit all standard 600 x 600mm grid ceilings, for easy installation and maintenance. Compact 600 x 600mm cassette High efficiency twin rotary inverter compressor Replacement technology (R22 & R407c) Lightweight and very easy to install Panel height 17mm for sleek, unobtrusive installation Removable corner pockets for easy access. Infra-red and wired controls available Detachable louvre and grille for easy cleaning. Connection kit required for twin, tripe and quad systems This 4 way cassette has been designed to suit all standard 600 x 600mm grid ceilings, for easy installation and maintenance. The new Super Digital Inverter Series of cassettes are compact, unobtrusive and flexible which can easily blend in with any room interior. They offer a high performance utilizing minimum energy to help lower your power consumption. The units are suitable for use with either new R410A refrigerant pipework, or indeed can be used as ‘replacement technology’ enabling the re-use of existing R22 or R407c pipework.