SHARE

Trex® Flat 4x4 Composite Post Sleeve Cap

SKU:
Replacement flat top post cap for Trex 4x4 composite post sleeves. Can be used in combination with all Trex Deck Railing lines.
Charcoal Black
Charcoal Black
Classic White
Classic White
Rope Swing
Rope Swing
Vintage Lantern
Vintage Lantern
Trex® Flat 4x4 Composite Post Sleeve Cap
Overview
Choose Options
Overview

Replacement flat top post cap for Trex 4x4 composite post sleeves. Can be used in combination with all Trex Deck Railing lines.

Downloads

Resources
Trex Railing Guide
Trex Railing Care and Cleaning Guide

Recommended For You

Customers Also Purchased
Trex Transcend® Square Composite Baluster in 36" Rails
Charcoal Black
Classic White
Rope Swing
Vintage Lantern
+ 3 more
$7.00
Trex Transcend® Square Composite Baluster in 42" Rails
Charcoal Black
Classic White
Rope Swing
Vintage Lantern
+ 3 more
$9.00
Trex® Round Baluster in 36" Railing
$5.00
Trex® Post Skirt in 6x6 Composite Post Sleeve
Classic White
$9.99
Trex® Flat 4x4 Composite Post Sleeve Cap
Charcoal Black
Classic White
Rope Swing
Vintage Lantern
+ 3 more
$12.99
Trex Transcend® Composite Decking Sample in Rope Swing
$5.00
Trex® 4x4 Composite Post Sleeve Skirt - 2 Piece
Charcoal Black
Classic White
Rope Swing
Vintage Lantern
+ 3 more
$9.99
Trex® Flat Post Cap Light
Charcoal Black
Classic White
Rope Swing
Vintage Lantern
+ 3 more
$103.99
Trex Transcend® RSB Bracket Pack in Stair Rails
$18.00
Trex Transcend® Composite Decking Sample in Tiki Torch
$5.00
Trex® Post Sleeve in 4" x 4" x 48"
$50.99
Out of stock
Trex Transcend® Gasket Pack in 45° Rail
$11.00
Trex Select® Classic 6' x 42" Horizontal Rail & Baluster Kit
$184.16
Trex Select® Classic 8' x 36" Horizontal Rail & Baluster Kit
$203.05
Trex Transcend® Blank Baluster Spacer
Charcoal Black
Classic White
Fire Pit
Rope Swing
Vintage Lantern
+ 4 more
$12.50
Out of stock
Trex Signature® Aluminum Rail 2.5" Post Cap
Bronze
Charcoal Black
Classic White
+ 2 more
$8.00
Trex Signature® Aluminum Blank Top Rail
Bronze
Charcoal Black
+ 1 more
$31.00
Trex Signature® Mounting Hardware for Horizontal Railings
Bronze
Charcoal Black
Classic White
+ 2 more
$47.99
Trex® Adjustable Foot Block
Charcoal Black
Classic White
Rope Swing
Vintage Lantern
+ 3 more
$8.00
Trex Transcend® Mounting Hardware for Cut Rails in Horizontal
Charcoal Black
Classic White
Rope Swing
Vintage Lantern
+ 3 more
$23.00
Trex Signature® Round Baluster in 36" Railing
Charcoal Black
$7.00
Trex® LED Riser Light in 4-pack
Bronze
Charcoal Black
Classic White
+ 2 more
$125.00
Trex® Solar Post Cap Light
Black
White
Vintage Lantern
+ 2 more
$122.00
Trex Signature® Square Deck Baluster in 36" Railing
Bronze
Charcoal Black
Classic White
+ 2 more
$8.00
Trex Transcend® Mounting Hardware for Cut Rails in Stair
Charcoal Black
Classic White
Rope Swing
Vintage Lantern
+ 3 more
$23.00
Trex Signature® Swivel Bracket in Stair Railing
Bronze
Charcoal Black
Classic White
+ 2 more
$60.99
Trex Transcend® Rail Gasket pack in Horizontal in 0°
Charcoal Black
Classic White
Rope Swing
Vintage Lantern
+ 3 more
$11.00

Outdoor Living Inspiration

Browse our collection of design ideas, advice from industry experts, how-to help, and homeowner stories to inspire your next outdoor project.

Get Inspired

#MyTrexStory

See how Trex homeowners use Select® railing in their outdoor space.

More from @trexcompany

Copyright © 2025 Trex Company, Inc. All rights reserved.

Photos and videos © 2025 Warner Bros. Discovery, Inc. or its subsidiaries and affiliates. All trademarks are the property of their respective owners. All rights reserved.

Icon Image Icon Image Icon Image Icon Image Icon Image Icon Image

Unable to Add to Cart

You may order up to 4 free samples. To adjust your selections, remove what you do not need and then add your new choices.