The 4" Swivel Round Trim Recessed Lighting Kit with a white finish is the perfect way to brighten up the interior of your home or commerce with style. Featuring patented Push-N-Click clips that are fully adjustable and extra wide to grip uneven surfaces and provide easy tool-free installation. A swivel light bulb gives you the ability to focus light on specific areas and can be directed for any desired look. An integrated cut-off switch ensures that the fixture will not overheat and can be used with or without an insulation box. Dimmable with a compatible dimmer switch to create different lighting ambiance and moods (not included). Requires ten 50-watt halogens or 7-watt LED GU10 bi-pin base MR16 bulbs (sold separately). Cut a 3.88-inch hole for this item. The actual decorative trim size is 4.5 inches.