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4-in x 4-in Charcoal Black Composite Deck post base trim

Ratings & Reviews for Trex 4-in x 4-in Charcoal Black Composite Deck post base trim

4.3
332
Review
 4.3 out of 5
333 Reviews


82% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise these post sleeves for dramatically improving deck aesthetics, delivering a crisp, polished, professional finish that seamlessly integrates with composite systems. Most highlight excellent color matching and the straightforward snap-together design that allows easy installation by anyone. However, some report sizing confusion, noting the sleeves fit 4.5-inch posts rather than standard 4-inch posts, causing gaps or mismatches. A few mention the plastic construction feels lightweight but inexpensive, and some note visible seams. Despite these concerns, most customers consider the product worthwhile for its visual transformation and installation simplicity.

Customer review summary generated by AI, including incentivized reviews.
333 Customer Reviews

Would Not Recommend

Says they will fit 4 x 4 post. When snapped together they measure 4-1/2 inches on the inside.

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Response from TrexSupport

Hello! We are sorry to hear the disappointment in our product. The 4x4 post skirt is manufactured to fit over the 4x4 post sleeve. -Trex Customer Car...

TrexSupportSeptember 8, 2025

Trex

Resold damaged item

Would Recommend

I bought a 4X4X48 Trex composite deck post. Inside the damaged packaging of the item, that had obviously previously been returned, was a 4X4X38 Trex composite deck post. Before Lowes resells returned items to other customers I expect the contents to be reinspected so as not to waste my time on returns. I previously pointed out damage of the same item in-store to employees. This was an online purchase. Unacceptable.

September 1, 2025
Verified Purchaser
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Response from TrexSupport

Hello! We are so sorry to hear of the issues you've experienced. Please reach out to us at 1-800-289-8739 so that we may further assist. -Trex Cu...

TrexSupportSeptember 2, 2025

Trex

Very good

Would Recommend

I liked the white composite deck post sleeve for its crisp, polished appearance that instantly upgrades a deck’s look. It’s designed to protect and cover structural posts, resisting rot, insects, and weather damage. The low-maintenance composite material stays bright over time, and installation is simple, creating a seamless, professional finish that complements various railing styles.

August 13, 2025
From 4-in x 4-in Classic White Composite Deck post base trim Verified Purchaser
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Response from TrexSupport

Hello, and thank you so much for your wonderful 5-star review! We genuinely appreciate you taking the time to share your experience. It's custome...

TrexSupportAugust 14, 2025

Trex

Measure with care

Would Not Recommend

This product was too big. I have a standard 4x4 post (actual measurement 3.5 x 3.5") with a white vinyl slip cover over it. I have no idea how this was measured, but it is way too big to fit around a covered 4 x 4 post. I do not how to find one that fits, except to measure what you have and then measure the trim.p to insure it fits correctly.

July 13, 2025
From 4-in x 4-in Classic White Composite Deck post base trim Verified Purchaser
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Response from TrexSupport

Hello, and thank you for your feedback. We’re sorry this product isn’t working for you. However we’d
like to learn more about your situation and...

TrexSupportJuly 15, 2025

Trex

Nice base

Would Recommend

Really like that there 2 piece

July 11, 2025
From 4-in x 4-in Classic White Composite Deck post base trim Verified Purchaser
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Response from TrexSupport

Hello, We can’t thank you enough for your kind review! Trex

TrexSupportJuly 11, 2025

Trex