#1 Home Improvement Retailer

Internet #207011309

Model #SLS-PC-ON

Slatestone 8 in. x 8 in. x 41 in. Onyx Faux Polyurethane Stone Post Cover

Apply Now
Pay $157.90 $182.9 when you open a new card. info
Apply for a Home Depot Consumer Card
How to Get It

Frequently Bought Together


Product Overview

Manufactured with specially formulated polyurethane and combined with fire retardants and UV inhibitors, NextStone insulated Faux Stone Post Covers are cast from actual stone and rock patterns. The innovative post covers have been designed to totally limit the need to hire masonry installers, professional siding and decking installers or skilled laborers. Each of the easily managed, lightweight panels only weighs about 1 lb. per sq. ft., removing the need to pay for additional materials, equipment or labor.
  • Lightweight polyurethane post covers are processed with an in-mold coating to prevent fading and are used perfectly to decorate desk posts and fence posts
  • Light weight and easy to install 1-piece post cover slides over a 4 in. x 4 in. or 6 in. x 6 in. post
  • All rail mounting blocks are compatible
  • Matching cap: slatestone post cover cap onyx
  • Energy savings with increased R-value
  • Cap light kits and post cover caps are sold separately
  • Click to learn how to select the right lumber for your project

Additional Resources

From the Manufacturer



Product Height (in.)41 inProduct Length (ft.)3.41 ft
Product Thickness (in.)8Product Width (in.)8 in


Color/FinishOnyxFastener recommendationScrews
FeaturesHidden Fasteners Compatibility,Paintable,UV Protected,Water ResistantMaterialComposite

Warranty / Certifications

Manufacturer Warranty20 Years Limited

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4
    out of 5 reviews
  • 50%recommend this product
Filter by:
Showing 1-5 of 5 reviews
When September 2020 came around, and Coronavirus impacted us all, I decided to tackle a front por...
When September 2020 came around, and Coronavirus impacted us all, I decided to tackle a front porch project that I had put off since buying the house in June 1985. First I tackled the old, poorly constructed concrete porch, and covered it with Home Depots “Behr Premium – Granite Grip”. You can see that review on Home Depots product reviews. My second job was to tackle the old front porch columns. We had the old style wrought iron columns every since we moved in. I was looking to upgrade to the fake/faux stone post covers. After reading reviews and checking around for best pricing, I found that Home Depot was the best bet. We chose the (NextStone – faux polyurethane stone post covers) in the Onyx color, and 8”x8”x41” size. I placed an order online for 4 of them, and 4 of the 10.5”x10.5”x3.5” Onyx post cap covers. That size of post cover comes as a 1 piece construction, and will fit over a standard 4”x4” wooden post, with a spacer on each side. As far as the post goes, I wanted solid cedar post, but Home Depot didn't have them, so I went else where for those. (note: They are Expensive with a capital E). My old iron post had been attached at the top, under the porch over hang, with only 2 wood screws, and only sitting on the concrete at the bottom. NOT safe at all! So I purchased several more items, while at Home Depot. For the bottom of the post, I purchased a Zmax (ABA44Z) 4”x4”-16 ga. post base, and attached each of them with 3/16” x 2.5” Tapcon screws, after leveling and marking post positions. For the top of the post, I purchased a Zmax (BC40Z) 18 ga. for 4x normal lumber, and attached each of them with 3” stainless steel deck screws. I used my Dewalt – oscillating multi-tool to cut a 4”x4” square out of the top of the NextStone post cap covers, and the black Veranda (73019418) 4”x4” post caps. I used some scrap 1/2” plywood as spacers on all four sides of the post. I placed the plywood up 4” from the post bottom, up to 1” below the post cover height. I then slide the NextStone post covers over the top of the post that had been cut to size, and then slide the cut out NextStone post cap on, and then the reversed (bottom facing up) cut out Veranda post cap on. I placed the post, with all the slid on attachments, on the bottom post base, and then slipped the top of the post into the half post base and put 2 - 3” stainless steel deck screws on two opposite sides. I then added 2 - 3” stainless steel deck screws on two opposite sides of the bottom post base. I then slid the NextStone post cover all the way down to the concrete, and slide the NextStone post cap down. I then ran 3 - 3” stainless steel deck screws through the NextStone post covers on two opposite sides. Placing one screw at the top, middle and bottom of each side. The reversed Veranda post cap would not stay in place at the post top, so I drilled a small hole, and placed 1 small stainless steel screw on two opposite sides, to hold it in place. Then I took a tub of Dap – black Dynaflex ultra exterior sealant, and caulked around the post cover bottom. Then lifted the post cover cap, added the sealant around the top outside edge of the cover, slid the cap back down, and added more around the top of the post cover where the cedar post came through. I also added the sealant around the bottom of the Veranda cover. My thinking is that maybe this will help keep out most bugs, like ants and earwigs. NOTE: Remember, you will need some way to jack or support the porch roof, while replacing the post. Now for the review part. All the products I used where of good quality. However, I had a major problem with the NextStone product shipping. The product it's self was good, but HD doesn't carry it, so you have to order it online and have it shipped free to the store, or a charge to your home. When my original shipment came, one of the post covers was the wrong color. So they returned it, and ordered another one for me. When it came, it was a cap, not the cover. They finally shipped the correct item to my home for free. The whole problem delayed my project by 2 full weeks. This was not a problem with Home Depot, but with the product vendor, and the HD associates that helped me where nice and understanding. We are pleased with the final results, and I would recommend this to others. It's not a hard job, but you will need a few specific tools.
Response from FauxGirlApr 2, 2021
Thank you so much for your Review. We are happy you were please with the final outcome, even after the issued you experienced with shipping. Thanks again!
  • Verified Purchase
  • Recommended
    Easy to work with , stacked nice ....
    Easy to work with , stacked nice .
    Response from FauxGirlAug 30, 2021
    Thank you so much for the Review...it is very much appreicated.
      Looks nothing like the picture, nothing like rock. Should be $20/pc not $95. Looks like it was pa...
      Looks nothing like the picture, nothing like rock. Should be $20/pc not $95. Looks like it was painted with can black spray paint in somebody's garage. Complete joke at the price they want.
      Response from FauxGirlMay 18, 2020
      So sorry to hear you didn't like the paint! Onyx is the darkest color offered and could perhaps be difficult to distinguish the texture.
      • Verified Purchase
      5 Star Review
      Rating provided by a verified purchaser
      • Verified Purchase
      Showing 1-5 of 5 reviews