These energy-efficient, low-maintenance solar fence post caps are perfect for adding a soft glow to your fence post line. Made of Heat-Resistant Plastic, they will last for years to come. With a larger 10MM LED and our Newest Solar Panel, they will provide double the brightness and longer illumination 

Two Outdoor Garden 4 x 4 White Fence Post Caps
One Pre-Installed Rechargeable Battery In Each Unit, Can Last Up to Two Years
Light source: One big 10mm White LED (Warm White LED optional)
Solar panel: Amorphous Solar Panel
Operating Time: Up To 8 Hours (depending on the weather, sunlight availability)
Safe & Weather Resistant
Fits All 4 x 4 Hollow plastic/PVC/Vinyl Posts (Solid Wood/Composite will have a 1/4" gap around which silicon or provided screws can be used)
Post Base dimension (new default design): 4 1/16"x 4 1/16" (inside opening). Fit over outside of the post (No deck base added)
*Note: Old base design will be available upon optional selection only:
*Post Base Dimension (old design): 3 15/16" (L) x 3 15/16" (W) x 1" (H) (with 3 13/16" inside opening) for Wood/Composite posts smaller than 3-13/16" 
*Deck/Rail Base Dimension With Sleeves (old design): 5.5" (L) x 3 15/16" (W) x 1 7/16" (H) (Discard if used with post)
Hollow Vinyl/Plastic Post base (old design): Inside post opening must be larger than 3-15/16" square (Post cap will fit inside)
Note: Additional charge will incur when optional features are selected