The Seto 12 Volt Fire Rated White Downlight is a dimmable fitting which uses 1 x 50 watt halogen lamp (not supplied). The Seto requires a 70mm cutout & is IP65 rated. White finish Fire rated for 90 minutes Uses 1 x 50 watt MR16 halogen lamp (not supplied) 12 volt Transformer not included Diameter 100mm Overall recess depth 110mm Cutout of 70mm required IP65 rated Suitable for use in zones 1, 2 & 3 of the bathroom Dimmable 12 month manufacturer guarantee