Ask Mylow

Mylow is an AI virtual assistant.

More Information

Is it easy to install?What is the warranty period?Will this fit a 4x4 post?How do I clean it?Is it safe for stairs?

Trex 4-in x 4-in x 9-ft Classic White Post sleeve

Name: Trex 4-in x 4-in x 9-ft Classic White Post sleeve
Brand: Trex
SKU: 1000714508
Rating: 4.1 (50 reviews)

Shop Trex

4.1

Get Pricing & Availability

Manufacturer Color/Finish: Classic White

Members save more.

Your Lowe’s Deck Designer Tool

View professional 3d deck renderings
Get a materials list
Generate a cost estimate
See building plans

Start Designing Your Deck

Best Price. Guaranteed

Find a lower price on an exact item? We'll match it. Some exclusions apply.

Price Guarantee

FREE Returns

Return it in store or ship it back for free. Eligibility rules apply.

Return Policy

FREE Shipping

Delivery is on us for orders over $45. Some exclusions apply.

Shipping Details

The Trex composite railing post sleeve fits over a 4 x 4 pressure-treated post or a post surface mount
This Trex railing component is made of a high-performance composite material that won't warp, rot, split or splinter
The 108-in post sleeve is perfect for 42-in high railing, longer posts commonly required for stairs and support posts that are used on porches
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
Trex railings are designed to meet national building code requirements for residential and commercial dwellings
Trex products install easily with common tools; no sanding, staining or painting required

General
Finish	Protective shell	Manufacturer Color/Finish	Classic White
Type	Post sleeve	Total Number of Pieces	1
Color/Finish Family	White

Dimensions
Common Measurement (L x W)	108-in x 5-in	Common Length in Feet	9-ft
Common Width (Inches)	4	Actual Length (Feet)	9
Common Thickness (Inches)	4	Actual Width (Inches)	4.45
Common Measurement (T x W)	4-in x 4-in	Actual Thickness (Inches)	4.45

Features
Pressure Treated	No

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Warranty
Warranty	25-year limited

Compatibility
For Use with Decking	Yes	For Use with Deck Stairs	Yes
For Use with Porches	Yes

Miscellaneous
UNSPSC	30103600

Check out the Best Selling Deck Posts & Post Sleeves on Lowes.com

Review

4.1 out of 5

50 Reviews

90% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The product offers a quality, maintenance-free look for decks. Customers generally praise its quality and ease of installation. However, some issues were noted, including inaccurate measurements leading to the wrong size sleeves, damaged or defective sleeves upon delivery, and compatibility problems with certain post cap options. While the product can improve the deck's appearance, customers should carefully verify measurements and compatibility before purchasing to avoid potential problems.

Customer review summary generated by AI, including incentivized reviews.

50 Customer Reviews

Sort By

Post sleeve

Would Recommend

Fits and covers my PT posts and gives a nice clean durable look to my deck

RobertMay 27, 2026
Verified Purchaser

Was this Review Helpful ?

Response from TrexSupport

Hello Robert,
We’re glad to hear the post sleeve gave your deck that clean, finished look. It’s great when it fits just right and enhances the o...

TrexSupportMay 27, 2026

Trex

post sleeve

Would Recommend

Nice quality post sleeve m=covers my PT wood and has a nice clean look

RobertMay 27, 2026
From 4-in x 4-in x 9-ft Classic White Post sleeve Verified Purchaser

Was this Review Helpful ?

Response from TrexSupport

Hello Robert,
Thank you for sharing your experience. It’s great to hear the post sleeve delivered on both quality and appearance, giving your de...

TrexSupportMay 27, 2026

Trex

Perfect match Lowe’s great price and Trex quality!

Would Recommend

Just what I needed matches my existing deck.

MichaelMay 4, 2026
From 4-in x 4-in x 9-ft Charcoal Black Post sleeve Verified Purchaser

Was this Review Helpful ?

Response from TrexSupport

⭐ Thanks for the 5‑star review, Michael! ⭐ We’re glad the Trex® Charcoal Black Post Sleeve was the perfect match for your existing deck. Great to hea...

TrexSupportMay 4, 2026

Trex

44 Questions

Read All Q&A

Sort By

Trex 4-in x 4-in x 9-ft Classic White Post sleeve

Shop Trex

Your Lowe’s Deck Designer Tool

Overview

Product Features

Specifications

General

Finish

Manufacturer Color/Finish

Type

Total Number of Pieces

Color/Finish Family

Dimensions

Common Measurement (L x W)

Common Length in Feet

Common Width (Inches)

Actual Length (Feet)

Common Thickness (Inches)

Actual Width (Inches)

Common Measurement (T x W)

Actual Thickness (Inches)

Features

Pressure Treated

Certifications

CA Residents: Prop 65 Warning(s)

Warranty

Warranty

Compatibility

For Use with Decking

For Use with Deck Stairs

For Use with Porches

Miscellaneous

UNSPSC

What Customers Are Saying

Community Q & A

44 Questions

Trex: Featured Videos

RELATED SEARCHES

Trex 4-in x 4-in x 9-ft Classic White Post sleeve

Shop Trex

Your Lowe’s Deck Designer Tool

Overview

Product Features

Specifications

Community Q & A

Trex: Featured Videos

RELATED SEARCHES

Trex Deck Posts & Post Sleeves

Trex Hidden Deck Fasteners

Trex Deck Board Samples

Trex Deck Post Caps

Trex Deck Gates

Trex Deck Tools & Accessories

Pressure Treated Deck Balusters

White Deck Posts & Post Sleeves

4-in x 4-in Deck Posts & Post Sleeves

Trex Deck Connectors

Trex Deck Balusters

White Deck Post Caps

White Deck Balusters

Trex Under Deck Ceiling Systems

White Deck Railing Systems