At a Glance

Square/Scalloped

UV Resistant

Water Resistant

Ask Mylow

Mylow is an AI virtual assistant.

More Information

Is it easy to install?How durable is this decking?What is the warranty coverage?Can I use it for stairs?How resistant is it to fading?

Trex Enhance Basics 1-in x 6-in x 20-ft Clam Shell Composite Deck Board Square/Scalloped

Name: Trex Enhance Basics 1-in x 6-in x 20-ft Clam Shell Composite Deck Board Square/Scalloped
Brand: Trex
SKU: 1000988790
Rating: 4.5 (241 reviews)

Shop Trex

4.5

241

Get Pricing & Availability

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

This item is no longer sold on Lowes.com

Here are some similar items...

TrexEnhance Basics 1-in x 6-in x 20-ft Clam Shell Composite Deck Board Square/Scalloped

3878

TrexEnhance Basics 1-in x 6-in x 12-ft Clam Shell Composite Deck Board Grooved/Scalloped

3035

TrexEnhance Basics 1-in x 6-in x 16-ft Tide Pool Composite Deck Board Grooved/Scalloped

2856

TrexEnhance Basics 1-in x 6-in x 16-ft Saddle Grooved Composite Deck Board

4469

TrexEnhance Basics 1-in x 6-in x 16-ft Clam Shell Grooved Composite Deck Board

4471

TrexEnhance Basics 1-in x 6-in x 8-ft Pebble Beach Composite Deck Board Square/Scalloped

2856

TrexEnhance Basics 1-in x 6-in x 20-ft Clam Shell Composite Deck Board Square/Scalloped

3864

TrexEnhance Basics 1-in x 6-in x 16-ft Pebble Beach Composite Deck Board Grooved/Scalloped

2856

TrexEnhance Naturals 1-in x 6-in x 16-ft Foggy Wharf Composite Deck Board Grooved/Scalloped

3912

TrexEnhance Basics 1-in x 6-in x 8-ft Clam Shell Square/Scalloped Composite Deck Board

4418

TrexEnhance Basics 1-in x 6-in x 20-ft Clam Shell Composite Deck Board Square/Scalloped

3883

TrexEnhance Basics 1-in x 6-in x 8-ft Tide Pool Composite Deck Board Square/Scalloped

2856

TrexEnhance Basics 1-in x 6-in x 8-ft Saddle Square/Scalloped Composite Deck Board

4418

TrexEnhance Naturals 1-in x 6-in x 16-ft Toasted Sand Composite Deck Board Grooved/Scalloped

3910

TrexEnhance Naturals 1-in x 6-in x 8-ft Toasted Sand Square/Scalloped Composite Deck Board

3862

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

Trex's composite decking in the color Clam Shell is an easy-to-match shade of medium grey featuring a low-maintenance, wood-like grain pattern
Deck board is made of high-performance composite that won’t rot, warp or splinter, unlike wood
Decking has a protective outer shell for durability; resists fading and staining
Quality low-maintenance material; cleans easily with soap and water
Backed by the Trex 25-year Limited Residential Warranty and the Trex 25-year Limited Residential Fade and Stain Warranty
Use square-edge boards for traditional decking applications, edging and stairs
Trex decking installation is simple; no specialty tools required; lightweight scalloped profile for easy handling
Made of 95% recycled materials in the USA
Priced to put the pressure on treated lumber

General
Color/Finish Family	Gray	Finish Texture	Solid
Type	Deck board	Manufacturer Color/Finish	Clam Shell
Material	Composite	Color Shade	Dark
Style	Solid	Series Name	Enhance Basics
Package Quantity	1

Dimensions
Common Length Measurement	20-ft	Actual Width (Inches)	5.5
Common Measurement (T x W)	1-in x 6-in	Actual Length (Feet)	20
Actual Thickness (Inches)	0.94	Square Footage Per Piece (Sq. Feet)	9.17

Features
UV Resistant	Yes	Lowe's Exclusive	No
Edge/Bottom Profile	Square/Scalloped	Water Resistant	Yes
Grooved for Hidden Fastener	No

Compatibility
For Use with Porches	Yes	For Use with Decking	Yes
Sample Item Number	2423169	Corresponding Hardware Item Number	Trex recommended deck screw - see installation guide for more details
For Use with Deck Stairs	Yes

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	Flame Spread Rating	Class C

Warranty
Warranty	25-year limited

Miscellaneous
UNSPSC	11122000

Check out the Best Selling Composite Deck Boards on Lowes.com

Review

4.5 out of 5

241 Reviews

95% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

+ 8

What Customers Are Saying

Customers overwhelmingly praise this composite decking for exceptional durability, stunning appearance, and low-maintenance benefits. Most highlight its sturdy, long-lasting construction that outperforms traditional wood, eliminating the need for staining, painting, or frequent replacement. The realistic wood-grain texture and rich color options consistently exceed expectations, with many noting the visual appeal in person surpasses online images. Installation is widely described as straightforward, especially with hidden fasteners and color-matched screws creating seamless results. A few mention minor issues like dimensional variations or surface heat in direct sunlight, but overall, customers consider this a worthwhile long-term investment.

Customer review summary generated by AI, including incentivized reviews.

241 Customer Reviews

Sort By

My non maintenance Trex deck

Would Recommend

One of the best in its class and easy to work with

BobbyJune 10, 2026
From Enhance Basics 1-in x 6-in x 16-ft Saddle Composite Deck Board Square_SLASH_Scalloped Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/0732b2c8-8bd9-51d4-9ac4-129e824cbc62

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/4ad0fb07-7a64-5f68-a4cf-ab4163a403df

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/e68e8e09-92a7-5dbb-85c2-d85a0238a2f5

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/0f3e2971-06a9-5930-a8c4-25e8c63c4599

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/d257951d-8473-5e63-abcb-1ffd1cb906a0

Was this Review Helpful ?

Response from TrexSupport

Thank you for the 5-star review! We’re grateful for your support and thrilled to know you had a positive experience. We appreciate your business and ... Read More

TrexSupportJune 10, 2026

Trex

Great customer service

Would Recommend

Haven’t used the product yet but we were happy with the color, quick shipment availability & the customer service at Lowe’s Lebanon PA was outstanding. Jeremy answered all questions & researched if needed. He sold the product!

D LebanonMay 29, 2026
From Enhance Basics 1-in x 6-in x 20-ft Clam Shell Composite Deck Board Square_SLASH_Scalloped Verified Purchaser

Was this Review Helpful ?

Response from TrexSupport

Hello, and thank you for your lovely review. We appreciate you taking the time to share your experience with us as well. We hope you enjoy your brand... Read More

TrexSupportJune 1, 2026

Trex

Enhanced Trex Decking

Would Recommend

Enhanced Trex Decking is such a great product! I used it for my deck and it came out even better than i could have imagined!! easy to use and lasts

RobertMay 27, 2026
From Enhance Basics 1-in x 6-in x 16-ft Saddle Composite Deck Board Square_SLASH_Scalloped Verified Purchaser

Was this Review Helpful ?

Response from TrexSupport

Hello Robert,
It’s great to hear how happy you are with your deck project. We love that the finished result exceeded your expectations and that ... Read More

TrexSupportMay 27, 2026

Trex

Easy to install

Would Recommend

Easy to install looks very modern

Career womanMay 17, 2026
From Enhance Basics 1-in x 6-in x 20-ft Saddle Composite Deck Board Verified Purchaser

Was this Review Helpful ?

Response from TrexSupport

Hello, and thank you for the feedback. Trex strives to be the best composite decking brand in the industry, and we are thrilled to hear that your dre... Read More

TrexSupportMay 19, 2026

Trex

Boards are a lot heavier than wood

Would Recommend

Matches what i have

Rob BMay 7, 2026
From Enhance Basics 1-in x 6-in x 16-ft Saddle Composite Deck Board Square_SLASH_Scalloped Verified Purchaser

Was this Review Helpful ?

Response from TrexSupport

Thanks for the 5 stars, Rob! ⭐️ Glad to hear it matched your existing boards perfectly. Trex decking is a bit heavier than wood by design—built for l... Read More

TrexSupportMay 11, 2026

Trex

Page 1 Page 2 Page 3 Page 10

38 Questions

Read All Q&A

Sort By

Trex: Featured Videos

ARTICLES FOR YOU

Buying Guides

PVC Deck Materials: A Guide to PVC for Decking

PVC decking materials create a low-maintenance, beautiful deck. Learn the benefits of PVC for decking and see how it compares to composite and wood

A video showing different ways to add upgrades to wood and composite decks.

How-Tos

Upgrade Your Deck and Add Finishing Touches

In this final video of our how to build a deck series we'll show you how to add accessories and give your deck a custom look with a lot of personality.

Inspiration

Deck Fascia Ideas That Will Give Your Home a Warmer Finish

Check out deck fascia ideas to enhance your deck's look and durability. Find stylish and practical options to boost your outdoor space’s appeal and strength.

Trex Enhance Basics 1-in x 6-in x 20-ft Clam Shell Composite Deck Board Square/Scalloped

Shop Trex

Your Lowe’s Deck Designer Tool

Here are some similar items...

Overview

Product Features

Specifications

Community Q & A

Trex: Featured Videos

ARTICLES FOR YOU

RELATED SEARCHES

Trex Composite Deck Boards

Trex Composite Deck Boards

Composite Deck Boards

Composite Composite Deck Boards

Trex Hidden Deck Fasteners

Trex Deck Railing Systems

Trex Deck Post Caps

Composite Fascia Boards

Trex Deck Tools & Accessories

Gray Fascia Boards

Composite Deck Gates

Composite Deck Board Samples

Trex Deck Accents

Gray Deck Posts & Post Sleeves

Composite Deck Connectors