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Add a dash of ambient lighting to posts with LMT Mercer's Neptune Solar Post Cap Light. It has curved edges and a tiered look along with opaque lenses on all four sides. Cool solar-powered LED light shines through the lenses for subtle lighting on your deck. The post cap is available for posts as small as wood 4 inch x 4 inch or as large as 6 inch sleeves. A charged battery is included, but it may take a couple days to fully charge after installation.

Unsure about your size? Measure your posts carefully and use our Post Cap Diagram to understand critical dimensions and ensure a proper fit.


DecksDirect # 6443

LMT Solar Light Installation

LMT Solar Warranty

FinishesAlmond, Black Hammertone, Khaki, and White
Pack SizeEach
Post Cap Opening Size3-11/16 in, 4-1/16 in, 4-9/16 in, 5-1/16 in, 5-9/16 in, and 6-1/16 in
Material Type

Vinyl body, acrylic lenses

BatteryLithium Ion - 600 mAh 3 volt battery
BulbIntegrated LED
Color TemperatureCool white (5000 Kelvin)
(width x depth x height)
3-11/16 in - 4-9/16 in: 6 in x 6 in x 2-1/8 in
5-1/16 in - 6-1/16 in: 7-1/4 in x 7-1/4 in x 2-1/4 in
Inset Measurement1/2 in
Package Contents(1) light with (1) 600 mAh 3 volt battery, installation instructions
Illumination Arean/a
WarrantyView LMT Warranty Information
OtherCoordinating un-lit post cap available
Initial charge time: 24-48 hours of exposure to sunlight needed.
Run time: Varies with exposure to sunlight.
Batteries are not covered under manufacturer warranty.

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