Check the listing for details. Base for Stackable Module Build-Your-Own Status Indictating Light Horn Warning. Condition: New. Listed at 12.99 USD. One (1) Brand New Base Kit---Custom Make Your Own Industrial Lights Kit Includes: Base, Cap, Wire Harness, Mounting Hardware (Light module NOT included) Compatible with Light and Sound Modules Supports 1 to 5 Modules 2 Styles to Choose: Top or Side-Mount (You must specify the style in your payment. Otherwise a Top-Mount base will be sent as default choice.) Indoor or Outdoor Use: Rain Proof Dimensions: 2-3/4" (Diameter) x 3" Top-Mount or 4" Side-Mount (H) Mounting Method: Top or Side Mount (See below. Modules sold separately) Item will be shipped from Boston, MA and you will be able to receive it within a few days. Your satisfaction is guaranteed or your money back! Item may be returned within 30 days upon delivery for a full refund if you are not satisfied with the quality, no question asked!