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Composite & Vinyl Post Caps

Trex Classic White Pyramid Post Caps top off a Transcend Railing section with deck board top rail
Complete a new or existing wood, composite, or vinyl rail system without the weight of metal using these durable and stylish post caps. DecksDirect offers expert-picked post caps that ship fast directly from our warehouse.
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  1. Black (15)
  2. White (22)
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  5. Grays (6)
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  1. Synthetic (7)
  2. Vinyl (16)
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  1. 2 in to 2-5/8 in (2)
  2. 3 in to 3-1/4 in (2)
  3. 3-1/2 in to 3-5/8 in (5)
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  6. 5 in to 5-1/8 in (10)
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  1. AZEK Building Products (2)
  2. Deckorators (1)
  3. Durables (4)
  4. Fairway (3)
  5. LMT Mercer Group (8)
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  7. Trex (2)
Price
  1. $0.00 - $9.99 (10)
  2. $10.00 - $19.99 (6)
  3. $20.00 and above (6)

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22 Item(s)

  • Haven Post Cap by LMT Mercer - 4" White

    Haven Post Cap by LMT Mercer

    Starting at: $4.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Ornamental Solar Collecting Post Cap - 3-1/2" Black

    Ornamental Solar Collecting Post Cap with Accessory Connection by LMT Mercer

    Starting at: $26.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Cape May Post Cap by LMT Mercer - White

    Cape May Post Cap by LMT Mercer

    Starting at: $4.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Neptune Post Cap by LMT Mercer - 4" White

    Neptune Post Cap by LMT Mercer

    Starting at: $4.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Ornamental Post Cap by LMT Mercer - Matte Black

    Ornamental Post Cap by LMT Mercer

    Starting at: $4.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Cape May Solar Collecting Post Cap by LMT Mercer - White

    Cape May Solar Collecting Post Cap with Accessory Connection by LMT Mercer

    Starting at: $20.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Neptune Solar Collecting Post Cap by LMT Mercer - White

    Neptune Solar Collecting Post Cap with Accessory Connection by LMT Mercer

    Starting at: $20.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Ornamental Post Cap for Trex Post Sleeves by LMT Mercer Group - Classic White

    Ornamental Post Cap for Trex Post Sleeves by LMT Mercer Group

    Starting at: $11.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Transcend Flat Top Post Cap by Trex - Classic White

    Trex Transcend Flat Top Post Cap

    Starting at: $10.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Transcend Pyramid Post Cap by Trex - Classic White

    Trex Transcend Pyramid Post Cap

    Starting at: $10.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • High Point VersaCap by Deckorators - Black installed on 4" x 4" Post

    High Point VersaCap by Deckorators

    Starting at: $16.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • External Post Cap by Durables - White

    External Post Cap by Durables

    Starting at: $2.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • New England Post Cap by Durables - White

    New England Post Cap by Durables

    Starting at: $4.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Federation Post Cap by Durables - White

    Federation Post Cap by Durables

    Starting at: $6.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Ball Post Cap by Durables - White

    Ball Post Cap by Durables

    Starting at: $5.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • New England Post Cap by Fairway

    New England Post Cap by Fairway

    Starting at: $8.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Classic Post Cap by Fairway

    Classic Post Cap by Fairway

    Starting at: $15.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • External Post Cap by Fairway

    External Post Cap by Fairway

    Starting at: $4.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Premier Rail Pyramid Post Cap by AZEK

    Premier Rail Pyramid Post Cap by AZEK Building Products

    Starting at: $28.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • Premier Rail Island Post Cap by AZEK

    Premier Rail Island Post Cap by AZEK Building Products

    Starting at: $29.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • RadianceRail Post Cap by TimberTech - White

    TimberTech RadianceRail Post Cap by AZEK Building Products

    Starting at: $22.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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  • RadianceRail Express Post Cap by TimberTech - Kona

    TimberTech RadianceRail Express Post Cap by AZEK Building Products

    Starting at: $12.99

    Price reflects options chosen above

    The final product price may change based on the combination of size/type/finish/style you choose.
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Set Descending Direction

22 Item(s)

Not Sure Where to Start?

DecksDirect is dedicated to the builder in all of us. That's why we built this resource section just for you, with resources that will empower you with the information and confidence you need to succeed in your deck project. From expert advice to color samples or getting a FREE post cap quote, we've got you covered.

  • Talk to a Specialist

    Talk to a Specialist

    Jose is one of our post cap specialists and is here to help you with your project.

    Contact a Specialist  View all Team Members 
  • Getting Started

    Getting Started

    Get ideas and inspiration before choosing your post caps.

    Image Gallery 
  • post cap samples

    Choosing Post Caps

    Not sure what color to choose? Many post cap brands offer color samples; order yours today!

    Order Samples 
  • Design & Quote

    Free Quote

    Design your project with our specialist. When you're ready, get a custom quote.

    Get a Quote 
  • Post Cap Warranty

    Warranty Information

    See how different post cap manufacturers stack up on our manufacturer warranties page.

    View Warranties 

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  • Get live support Monday through Friday, 7 a.m. to 5:30 p.m. CST. Call us toll free: 1-888-824-5316
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