FIRE RATED TWO LIGHT CEILING DOWNLIGHT: The Astro Trimless Square Twin Adjustable Indoor Downlight in Matt White is a contemporary design made from mild steel ADJUSTABLE INTERIOR LED SPOTLIGHT: The Trimless works well in any interior application and is dimmable when paired with a dimmable GU10 bulb. Designed for installation into a new ceiling, before plastering. With 30° tilt and 360° rotation MATT WHITE FINISH: Made from mild steel which offers a strong durable construction. Astro's 3 year guarantee reflects our confidence in the Trimless's durability REQUIRES GU10 BULB: The Trimless does not come with a bulb. You will require 2 x 6W Max LED GU10 bulb, with a maximum length of 73mm. A 162 x 79mm cut-out, and a recess depth of 150mm is required FIXINGS & INSTRUCTIONS: All Astro products include comprehensive diagrammatic instructions