Great Point Wood Post Cap (4x4, 5x5, 6x6) Cedar, Redwood

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Wood Type: Cedar
Post Size: 3-1/2"
Sale price$19.00 Regular price$22.33


The Great Point Wood Post Cap features a flat top design with rounded edges and is offered in your choice of premium Cedar or Redwood. Each cap is handcrafted in the USA using the finest materials and available in a variety sizes to fit 4x4, 5x5 and 6x6 posts and post sleeves.  Slips over the top of your posts for easy DIY installation. 

Great Point post cap is fabricated to fit a variety of post and post sleeves measuring 3.5” to 6.5” square. See actual product dimensions below.

Click here for large posts measuring 7” to 10” square, in full and half sizes.

Custom sizes available: Call or email us at for details, pricing, and availability.

Product Details:

  • Qty: 1 wood post cap
  • Post Cap only - NOT a light
  • Materials:
    • Clear, Vertical Grain Cedar 
    • Clear Redwood
  • Cedar and Redwood must be treated prior to being installed
  • Slip-over style for easy installation
  • Made in the USA
  • Manufacturer: Nantucket Post Cap
  • One-year manufacturer warranty

Product Dimensions:

Order by post size: Measure the length and width of your post for the best fit. Post Cap opening will be 1/8" larger to allow the wood to naturally expand and contract.

*All measurements shown in inches. 

Post Size Opening Size Moulding Height Product Size (LxWxH)
3-1/2" 3-5/8" 1-1/2" 5.75 x 5.75 x 3 
3-3/4" 3-7/8" 1-1/2" 6 x 6 x 3 
4"  4-1/8" 1-1/2" 6.25 x 6.25 x 3 
4-1/2" 4-5/8" 1-1/2" 6.75 x 6.75 x 3 
4-3/4" 4-7/8" 1-1/2" 7 x 7 x 3 
5" 5-1/8" 1-1/2" 7.25 x 7.25 x 3
5-1/2" 5-5/8" 1-1/2" 7.75 x 7.75 x 3
5-3/4" 5-7/8" 1-1/2" 8 x 8 x 3
6" 6-1/8" 1-1/2" 8.25 x 8.25 x 3
6-1/2" 6-5/8" 1-1/2" 8.75 x 8.75 x 3


Post caps are made of clear, vertical grain, kiln-dried redwood, clear western cedar or Kiln Dried African Mahogany. These wood types are known for their beauty and durability in harsh environments. Cedar resists mold and mildew, plus its low density makes it less likely to swell, warp, cup or twist, as compared to other softer wood types.  

Product Care:

Nantucket wood products are sold in their "natural" state so they can be stained or painted to match or coordinate with any project. Because post caps are installed horizontally on top of the post, they receive the most sun exposure. Although you may leave cedar posts to weather naturally, to meet warranty requirements all cedar and redwood items must be treated prior to being installed. Apply an exterior urethane stain or paint to all surfaces, including inside and under the base, to ensure long life. Many semi-transparent seals are available for cedar to maintain its natural look, while still protecting the caps.


For a nail-free look, simply apply an exterior marine adhesive like 3M 5200 to the top of the post and slip the post cap over. Stainless steel finish nails may be used as an alternative.


Shipping: This product ships directly from the manufacturer's warehouse in Vermont. Caps are built after the order is received. Orders typically ship in 1-4 business days via UPS Ground and will arrive within 1-5 business days from the ship date. 

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