Trex 4-in x 4-in Classic White Composite Deck post base trim
Item #303278 |
Model #024290
The composite deck post skirt slides over the Trex railing Post Sleeve (sold separately) to provide a finished, detailed look
This Trex railing component is made of a high-performance composite material that won't warp, rot, split or splinter
Cleans easily with soap and water
Backed by the Trex 25-year Limited Residential Warranty
Decking and Railing Duos offer a simplified approach to deck design
The Trex Composite Deck Post Skirt can be used universally with Trex Enhance, Select, and Transcend Railing
Trex Composite Deck Post Caps, Sleeves, and Skirts provide the finishing touches to Trex Deck Rail Kit (#1223182) and Trex Deck Stair Kit (#1223183)
Trex Enhance Composite Deck Rail Kits and Components are available in Charcoal Black, Classic White and Saddle
General | |||
|---|---|---|---|
Color/Finish Family | White | Type | Deck post base trim |
Manufacturer Color/Finish | Classic White | Material | Composite |
Series Name | Enhance | ||
Dimensions | |||
|---|---|---|---|
Actual Depth (Inches) | 4.55 | Actual Width (Inches) | 4.55 |
Actual Length (Inches) | 1.25 | Fits Common Post Measurement | 4-in x 4-in |
Certifications | |||
|---|---|---|---|
CA Residents: 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 Accents on Lowes.com
Ratings may include incentivized customer reviews.
What Customers Are Saying
The product is generally well-received, with customers praising its sturdy construction, easy installation, and ability to provide a clean, finished look. The composite materials are weather-resistant and easy to maintain. However, some customers have encountered issues with the sizing and fit, as the trim is slightly larger than advertised, which can leave unsightly gaps around standard posts. There are also a few reports of the trim being cheaply made or fragile. Overall, the product appears to work best when used with the manufacturer's own post sleeves, as it is specifically designed for that system.
Customer review summary generated by AI, including incentivized reviews.Ordered 6x6 base yrim not 4x4 base trim
I have ordered 6x6 base trim for the 3rd time. Hoping to get the 6x6 base trim this time when it's supposed to come in on the 26th. The store has helped me through the ordering of the Trex 6x6 base trim. For some reason, they keep sending 4x4 base trim!
From 6-in x 6-in Classic White Composite Deck post base trim Verified Purchaser
It matches and looks very nice.
It worked great!
Verified Purchaser
Easy to install
Good quality product
From 4-in x 4-in Charcoal Black Composite Deck post base trim Verified Purchaser
Good morning and thank you for your amazing 5-star review! We’re so grateful you took the time to share your experience it truly means a lot to us. S...

Highly recommended!
I like the snap in version compare with the while piece.
Verified Purchaser
Hello, 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...

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Hello Becca, thank you for reaching out and sharing your experience. We sincerely apologize for the challenges you've encountered; this is not th...