Classic Solar Wireless lighted post cap complements our aluminum railing products. The 2.5" Classic solar post cap protects and illuminates the top of posts on our aluminum railing product lines. Solar-powered post caps are made of low-maintenance plastic and glow softly at night. Rechargeable batteries are included. Inside dimensions measure 2.5" x 2.5". WHERE TO BUY Get This Look Trailhead Decking in Canyon with the Contemporary Rail and Gate in Textured Black with 2.5" Classic Solar Post Caps in Black Product Literature Post Cap Care Information - [pdf - 471 KB] - English - French - Spanish Installation Instructions Solar Post Cap Installation - [pdf 102 KB] - English - French FAQ How long will the rechargeable batteries provided with the solar post cap last? The rechargeable batteries should last approximately one year. Can I use regular, non-rechargeable batteries in the solar post cap light? No, the solar post cap light is designed to be used with rechargeable batteries. If regular batteries are used in the sun, they will destroy the solar collector. We do have Solar Collector Replacement Units available for some post cap lights. How long is the life of the LED light bulbs? With a normal usage of 6-8 hours per day, the LED bulbs should last an average of 10 years. We do have Solar Collector Replacement Units available. SEE ALL FAQ