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Internet # 205040781

Model # PBKSQCAP4X4

Store SKU # 1000048875

Enhance 4 in. x 4 in. Charcoal Black Composite Post Cap-Flat

$10.98
  • Goes with Trex transcend post sleeve to complete your deck look
  • Won't warp, rot, crack or splinter
  • Never needs painting or staining, ever
  • View More Details

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Product Details

About This Product

Trex post sleeves, caps and skirts are the hub of all our railing lines and are available in 7 Transcend railing colors. Mix and match Trex railing components to create a unique style or choose from our Decking and Railing Duos for a simplified design approach. Trex Transcend Railing is as strong and sturdy as its namesake decking, putting every railing possibility within reach.

Highlights

  • Goes over the Trex transcend post sleeve (sold separately) to provide a finished, detailed look goes over the Trex transcend post sleeve (sold separately) to provide a finished, detailed look goes over the Trex transcend post sleeve (sold separately) to provide a finished, detailed look
  • To complete a Trex transcend horizontal railing section, you will need the following components (sold separately): post sleeve, post cap, post skirt, top rail, bottom rail, infill kit (hardware included) and baluster kit
  • To complete a Trex transcend stair railing section, you will need the following components (sold separately): post sleeve, post cap, post skirt, top rail, bottom rail, infill kit (hardware included) and baluster kit
  • High-performance composite material that won't warp, rot, split or splinter
  • Cleans easily with soap and water
  • Backed by a 25-year limited residential warranty
  • Decking and railing duos offer a simplified approach to deck design
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 205040781

Model # PBKSQCAP4X4

Store SKU # 1000048875

Specifications

Details

Cap/top style

Flat

Color Family

Black

Color/Finish

Charcoal Black

Features

No Additional Features

Fits Nominal Post Size

4x4

Material

Composite

Warranty / Certifications

Manufacturer Warranty

25-Year Limited Warranty

Questions & Answers

Will this fit a 4'x4' wood post?
ByDec 7, 2024
1 Answer | 
Answer This Question

Hello Doug, thank you for your interest in Trex, the post cap will fit when paired with an Enhance Post sleeve. If you have any further questions or need assistance, please do not hesitate to reach out. Kindly, -Trex Customer Care Team 1-800-289-8739

By|Dec 9, 2024


    what is the height?
    ByMay 14, 2024
    1 Answer | 
    Answer This Question

    Hello, thank you for reaching out. The post cap is 2.4" in height, 6" in length and 6" in width. Please feel free to reach out with any questions. - trex customer care

    By|May 14, 2024


      Hello: I am looking at the Trex 6x6 (5.95 x 6) cap to use on real wood posts that are 5.5 x 5.5. The info and questions seem to answer for 4x4 posts. 1. What are the actual inside dimensions of the 6x6 cap? 2. What is the height of the 6x6 cap? 3. Are these 6x6 caps made of composite Trex material or made of plastic? Thank you, Jim
      ByJul 23, 2020
      2 Answers | 
      Answer This Question

      No. This is made to fit a 4x4 post. The dimensions in the description is misleading.

      By|Aug 19, 2020

        Hello, and thank you for your interest in Trex! The 6x6 Trex square post sleeve cap is 2.46" in height, and 7.5" for its outermost external dimension, and will internally slide over a 5.5" post. Also the post sleeve cap is made of composite material. I hope this helps answer your questions. Thanks, Tori - Trex Customer Care Team

        By|Sep 12, 2020

          (1)

          does this cap fit over the 4x4 sleeve or the 6x6 sleeve?
          ByMay 13, 2019
          2 Answers | 
          Answer This Question

          Hello, and thank you for your interest in Trex! This post cap is designed to fit over our 4x4 post sleeve. Thank you, Bradley, Trex Customer Care

          By|May 23, 2025

            (1)

            4 x 4 post sleeve

            By|May 23, 2025

            (1)

            Do they sell single Do they sell by the boxful or if so how many in a box?
            ByJan 11, 2019
            2 Answers | 
            Answer This Question

            Hello, and thank you for your interest in Trex! The Trex Post Sleeve caps are sold individually. Thanks, - Trex Customer Care Team

            By|Jan 14, 2019

              They are sold by the piece. They come in a display box that has a dozen in it, I believe, but you pay for each, not a box.

              By|Jan 12, 2019


              Viewing 1-5 of 5

              Customer Reviews

              4.6 out of 5

              • 4.6 out of 59 reviews
              • 100% recommend this product
              Filter by:
              Showing 1-10 of 59 reviews
              Solid quality. Installation was a breeze. I used the post cap along with the post sleeve to cover a PT 4x4 post used to hold a retractable garden hose reel. The post sleeve was slightly larger than the 4x4 post so I used a few shims to fill it out. The cap still had no issues fitting the sleeve.
              by
              These are the caps for the charcoal posts sleeves and are pretty stylish. They are made of plasti...
              These are the caps for the charcoal posts sleeves and are pretty stylish. They are made of plastic and not a composite. I secured them to the sleeve with a few drops of caulk. Check these caps before you leave the store, one of mine was cracked.
              by
              Response from TrexSupportSep 5, 2018
              Hi Steve, Thank you for your review, we hope you enjoy your deck for many years to come! Erin, Customer Care Team Trex
              • DIY
              • Recommended
              The cap fit as expected and looks nice. The only downside is that it gets dirty easily
              by
              Response from TrexSupportMay 6, 2026
              Thanks for your feedback, Bob! ⭐️ We’re glad the fit and look hit the mark. For easy upkeep, a quick clean with mild soap and water will keep it looking sharp. Appreciate you choosing Trex! 🌿Brandi -Trex Trex
              This customer chose to rate the product and not provide text.
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              • Verified Purchase
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              Looks great, just what I wanted!
              by
              Response from TrexSupportNov 20, 2025
              Hello Leslie and thank you for your review. We work hard to meet customer expectations, and we’re happy to hear we hit the mark for you! Thanks, -Ryan Trex Customer Care Team Trex
              • Verified Purchase
              All Post caps fit perfectly on the sleeves. Well manufactured and put together.
              by
              Response from TrexSupportNov 11, 2025
              Hello Vera and thank you for your fantastic 5-star review! On behalf of all of us at Trex, we would like to thank you for sharing your positive feedback. We are thrilled that you love our products. Kindly, - Kim Trex Customer Care Team Trex
              • Verified Purchase
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              Showing 1-10 of 59 reviews

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              Product Snapshot

              Perfect for upgrading decks with durable, easy-to-clean composite post caps. Adds style and functionality with a 25-year warranty.
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              Dimensions

              H 1.6 in. x W 4.6 in. x D 4.6 in.
              H 2 in. x W 4 in. x D 4 in.
              H 2 in. x W 5.25 in. x D 5.25 in.
              H 2.62 in. x W 5.5 in. x D 5.5 in.