4.5 Solar Cap Lights Fit 4.5 Inch Posts - White Aluminum Set of 2

(22 reviews) Write a Review
In stock, ships in 1 to 2 business days.
Free Shipping

This set of two Classy Caps Imperial White 4.5 Solar Cap Lights are solar post cap lights made to fit your deck posts that measure 4.5 x 4.5 inch outside to outside edge. They have a low profile design, with rugged, maintenance-free powder coated cast aluminum housing, and non-yellowing Plexi-Glas curved lenses.

You can install solar post cap lights in any area that receives around 8 hours of sunshine, which will give you up to 10 hours of light duration at night.

A Volume Discount of 10% to 20% will be automatically applied with a 3 Set Minimum Purchase of solar deck post caps. See breakdown below.

With your purchase, you will receive a set of two White 4 x 4 solar post caps in sealed packages, and two 4.5 x 4.5 mounting bases in a separate plastic bag to fit your 4.5" deck posts. When you order multiple sets, your bag of 4.5 mounting bases may be in a separate box, so be sure to open all boxes to locate your mounting bases.

To change the mounting base, you will need to remove the fixture head by twisting it to the Left, set that aside, then remove the 4 screws located in each corner of the base that holds the 4" mounting base to the post cap light. Line up the 4.5" mounting base to the screw holes, and reinstall the four screws. Don't forget to take the reflector from the 4 x 4 base, and place it in the indentation in the new 4.5 x 4.5 base. Push the Switch to AUTO, reattach the fixture head by twisting it to the Right, and install onto your post.

If you love this style but need a different color, we also have the Imperial size for solar post cap lights 4.5 x 4.5 in a Black or Bronze powder coated finish.


  • Solar Post Cap Lights, White 4.5 x 4.5 Classy Caps Imperial, Set of 2
  • Free Shipping included for the 48 contiguous United States
  • Made specifically to fit over 4.5 inch decking posts
  • Volume Discount: Order 3 Sets - 10%, Order 5 Sets - 15%, Order 10 Sets - 20%
  • Low profile, measures 6" x 6" x 2.5"
  • 5000K Cool White LED bulb, with 15 lumens of light output, in each solar light fixture
  • One 1.2V AA 800mah Ni-MH rechargeable battery included in each fixture, should last between one and two years before needing to be replaced
  • Crystalline Solar Panel has 0.33 Watts, and will partially charge on cloudy days
  • Inserts are made from durable non-yellowing and curved Plexi-Glas
  • High Performance solar fence post lights stay lit for up to 10 hours
  • Lights up automatically every night with the auto/off switch
  • Will fit over an actual 4.5" x 4.5" deck post (4.5" x 4.5" adapter included with 4x4 solar light caps)
  • One year Warranty, excluding batteries
  • Manufactured by Classy Caps, with stringent quality control
One Year Limited Warranty from Classy Caps, excluding batteries after first 30 days.


  • Classy Caps 5

    Posted by Sally D on Feb 23rd 2024

    These lights are beautiful and are a perfect accent to my Trex railing. So easy to install with the adapter fitting.

  • Great fit with Trex Rail system 5

    Posted by Josh M. on Sep 11th 2023

    The 4.5" adaptor fits over the Trex post sleeves perfect! This solar light is exactly what I was looking for. Would certainly recommend. Also, seller was very fast at shipping, so another plus :)

  • Absolutely love these!! 5

    Posted by Georgia Weis on Sep 16th 2022

    These have exceeded my expectations. They have moved my deck up to another level. Very well made and light is perfect!

  • Post cap lights 5

    Posted by lawrence white on Jul 1st 2021

    I have a backyard that just begged for a solar lighting solution so this year I purchased two products from Natures Solar Lights which are fabulous. Great lumens output and impressive battery life. While I did have an issue with a product that wasn’t appropriate for my application the return process was fast and easy.
    Good company to work with.

  • Best Customer Service ever! 5

    Posted by James Carmichael on May 16th 2021

    Hi Marsha, the last adapter for the lighted post caps was delivered on Thursday. I want to thank you for the extra time you took to call me back to explain how the adapter works and to replace the one that didn't fit. You are awesome - best customer service ever. Thanks again - the lights are perfect. James (May, 2021)

  • Classy Caps Solar Caps 5

    Posted by Ann Colella on Apr 30th 2021

    My husband and I love the lights. It truly dresses up the deck.

  • Love these sturdy looking low profile lights 5

    Posted by Pratik Dalal on Apr 15th 2021

    Bought 14 (7 x 2) of them and initial reaction is awesome! I will update review once I have used it for a while. Love low profile look, adds character to my. deck. Been looking for them over 2 years and did not buy them from Trex due to price. These are reasonably priced and unmatched customer service from Natures Solar Lights! Good product, great customer service from NSS and now looking for good service for next few years!

  • Solar Lights 5

    Posted by John Sestito on Apr 7th 2021

    Highly recommend Purchased 16 at Home Depot and glad I returned. Purchase these from solar and the quality is a lot better and easier to install. Highly recommend

  • Trex deck lights 5

    Posted by Tasha Spicer on Mar 11th 2021

    These worked perfectly for for our new Trex deck post. They were easy to install and look elegant. Seller was super helpful and accommodating with any questions we had. I highly recommend this product from this seller.

Get the Newsletter