Ltpgtltstronggtaurora au dlm356 cast aluminium mains voltage 240v fixed lock ring downlightltbr gtltstronggtampnbspltbr gtthe dimensions of the downlight are as follows 80mmd x 110mmh the cut out hole size 70mmltbr gtextended spring fixing posts allow installation in double thickness plasterboardsltpgtltpgtampnbspltbr gtthis product comes with a 3 years guarantee on the fitting and the bulbltpgt