Traditional style solar post caps feature a durable plastic top resembling metal and real beveled-edge glass. Complementing all deck styles, these wireless post cap lights softly illuminate your deck without the hassles of wiring or electricity. All are available with a cedar or pressure-treated base. Post caps fit over standard 4” x 4” deck posts (measuring an actual 3-1/2” x 3-1/2”). Inside dimensions: 3-5/8” x 3-5/8”.