Outdoor Essentials 107889 Tiffany-Style Serpentine Jade Geometric Solar Garden Cap Solar postcap with Tiffany-style serpentine jade geometric design Fits nominal 4 by 4 post measuring actual 3.5-Inch by 3.5-Inch Quick and easy installation using garden post and stake (sold separately) Garden postcap has Cedar base Can also be used on mailbox, fence and deck posts