Imperial Solar Post Cap - White With 4.5"x4.5" Adaptor

New Feature
Sale price$47.99 USD Regular price$59.99 USD
Save 20%
Free U.S Shipping On Orders Over $50

Super Fast Delivery! Receive your order in 2-5 business days.

New Feature! Warm and Cool Light Color Modes

The modern yet elegant Imperial Solar Post Cap offers a clean contemporary design that is unequalled in performance. Its rugged cast aluminum construction with powder coated finish means no future painting. 

TRA45W Adaptor included to allow the SL211W to easily be installed on an actual 4.5"x 4.5" post.

Download our Instruction Manual

Post Sizing

Please measure your posts before purchasing

3.5" x 3.5" (4x4 Nominal)


4" x 4"


4.5" x 4.5"


Benefits of Classy Caps™ Solar Post Caps


Solar lighting save on energy costs. No need for wiring or timers. Lights turn on automatically at night.


The soft glow of renewable energy transforms the night into a magical and eco-friendly oasis.


An effective deterrent against intruders, illuminating the surroundings and creating a sense of security.


Quick and Easy installation eliminates the need to hire an electrician or handyman.

Customer Reviews

Based on 4 reviews
Brian Hicks
Great Solar Post Caps

Bought the Imperial solar post caps and after getting the right ones, took me 3 tries, they fit perfect and have some that have been running for a year now. The painted metal is the only way to go, others shred in the weather.

Hey Brian, thanks for leaving a detailed review on the Imperial Solar lights. Glad they are a great fit for you!

Well made

These are well made post caps that stay lit all night. The only issue I had was that mine did not come with instructions on how to add the adaptor. Once I figured it out, it was easy to do.

Hello Jen, thanks for leaving a review on the Imperial Lights with adapters. We are glad they worked out for you and hope you are enjoying your lights!

Morris Fultz
First Class

I brought three post caps this summer and loved them. They stay brightly lite all night long. This weekend they had the same post caps I needed to complete my deck post caps. They are perfect. Well constructed and lights up real bright. Extremely pleased.

Hello Morris, thank you for leaving a review on the Imperial solar lights! we are very happy you are enjoying them!

Kelly Sheeks
Fits Trex Post - With A Caveat...

Very pleased with the Imperial Post Cap so far. Can't help but notice the waste generated when upfitting the 4x4 cap with the adapter to fit a 4.5 x 4.5 post. You end up disposing of the 4" and 3.5" adapters to utilize the larger one. To reduce waste Classy Caps should consider manufacturing and selling the Imperial fitted and shipped with the 4.5" adapter only installed. Trex customers would appreciate this!

Hi Kelly! Thank you for taking the time to leave a review! We are glad to hear that you are enjoying your Imperial Solar Post Caps. Thank you also for the recommendation of packaging the Imperial with the 4.5x4.5 adaptor for Trex customers!