4x4 Cdr/Lby Slr Post Cap Antique Bronze finish and cedar wood trim Adds ambient lighting to your deck or fence project. Fits standard 4X4 wood post, Measures 3-5/8" x 3-5/8" Includes rechargeable battery, no wiring or electricity is required Easy installation, just apply an exterior-grade construction adhesive to the underside of the post cap and place firmly on the post.