It is important to have the best flat post cap. We are here to help you pick the best one for your purposes from all the best available products in market today.

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Our Top Picks:

Best Overall: Buy: Deckorators Flat Post Cap READ REVIEW

Best For High Quality: Buy: Greenlighting Flat Post Cap READ REVIEW

Best For Easy Installation: Buy: Wearpro Post Caps Flat Post Cap READ REVIEW

Best For Stainless Steel: Buy: Fence Supply Online Flat Post Cap READ REVIEW

Best For Perfect Fit: Buy: Jsp Manufacturing Flat Post Cap READ REVIEW

Best Classic Style: Buy: Fittings Plus Inc Flat Post Cap READ REVIEW

Best For Elegant Look: Buy: Plum Fittings Flat Post Cap READ REVIEW

Best With Wood Post: Buy: Captiva Flat Post Cap READ REVIEW

Best Overall: Deckorators Flat Post Cap

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The Deckorators Flat Post Cap is capable of outshining several other caps featured in this list in overall features. The deckorators flat post cap comes in good condition, It is designed for a great price and has an elegant design. These finely crafted post caps will protect your post and enhance your fence, porch or deck design for years to come. The cap measures 4 ” x 4 ”, with the inside dimensions measuring 3 - 5/8 ” x 3 - 5/8.

The cap is designed for perfect match, is made for a beautiful finish, it has reasonable pricing and has great style. Moreover, the cap provides great value, is functional, it is useful and has a good design. Finally, the deckorators flat post cap is walnut, is bright white, It looks really good and has a clean design.

Almost all customers quickly discovered that the cap was much better than expected. In addition, a few strongly agree that the cap is perfect and looks absolutely great. And, they say that the cap is perfect for stairs end cap. To sum up, for most buyers, Deckorators product was what they were looking for.

• This comes with a pretty rough finish, to match an outdoor cedar fence post.
• This is a fine piece of cabinet making, All mitered corners matched perfectly.
• This is adhesive, It looks very nice, it looks great and has a classic style.
• This will fit directly on top of a post measuring 3-1/2-by-3-1/2-inch.

Best For High Quality: Greenlighting Flat Post Cap

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Next on the list, we've got yet another cap that manages to win our hearts. It's the Greenlighting Flat Post Cap and it's widely considered as the cap that has the most suitable features. The greenlighting flat post cap is great for simple install and has great style. But with the quick addition of a post cap, you can add a touch of style to your fences or walls to make them really stand out. Once installed, these metal post caps are practically maintenance-free.

The cap is very durable and it makes for nice quality. In addition, this makes for solid construction and it is built with great customer service. Most importantly, the greenlighting flat post cap is attractive, is highly recommend, It is made for great finish and is designed for wood posts.

Most buyers quickly discovered that the cap was easy to install and all of the lights were right out of the box. In addition, a few strongly agree that the cap fits over 4x4 with no wiggle or play.

• This is for deck posts and it is installed super easily.
• This is made of cast aluminum with a wall thickness of 0.93.
• This looks great and it can for customer service.
• Keep your favorite hidden corners of your garden well lit and safe.

Best For Easy Installation: Wearpro Post Caps Flat Post Cap

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The Wearpro Post Caps Flat Post Cap gives the top-tier caps a run for their money by offering flagship specs at a much more affordable price. The wearpro post caps flat post cap is for deck posts, is highly recommend, it looks great and has a classy style. Make sure this fits by entering your model number. Further, the cap is coated with glossy paint, is made for a great finish, It is ornamental and has a clean design.

Finally, the wearpro post caps flat post cap is made of sturdy cast aluminum.

Most customers agree that the cap comes with two screws that are easily installed through the pre drilled holes on the side of the caps. And, a few also found that the cap has holes for drilling or nailing only two sides. Moreover, a few strongly agree that this cap is perfect to improve appearance and, most importantly, to lengthen the life of the post by keeping water out of the end grain. To sum up, at the price, they believe that they got a steal of a deal with it.

• They look great, are very sturdy, and are extremely easy to install.
• It looks like a nice cap and measures 3 1/2" square.
• This is adhesive, it looks nice and it is good for lifetime warranty.
• This comes with fit fine, it works well and has a good design.

Best For Stainless Steel: Fence Supply Online Flat Post Cap

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If you often find yourself confused about the appropriate and satisfactory cap, Fence Supply Online Flat Post Cap should be your first option for buying. The fence supply online flatpost cap is best for ease of use, It works great and has a simple design. Take time to measure your post. Not all 4x4 posts are the same dimension. These black fence post caps are for a standard 4x4 wood fence post (3.5"x3.5") This cap measures 3 5/8"x 3 5/8.

Most importantly, the fence supply online flat postcap is modern and it is strong.

Most buyers find that the cap is used to make them have a nice finished appearance looks looks like a snap - covered washer. Moreover, a few also found that the caps are really worth the money. Also, a few say that the cap is a great way to cover fence posts and protect them against rain. In short, for most buyers, it was what they were looking for.

• This is much easier and it is highly recommended.
• This looks great, though it looks like finished.
• This is great with fast shipping, it provides great value and has a modern design.
• They fit right over the posts and one nail holds them down.

Best For Perfect Fit: Jsp Manufacturing Flat Post Cap

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Jsp Manufacturing line of caps comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Jsp Manufacturing Flat Post Cap is best for a great appearance and it provides great value. Inside dimension is 5-58" x 5-58" square, 18-inch-thick to protect your treated posts from water and sun damage. In addition, it is highly recommended and it can help with customer service.

Finally, the jsp manufacturing flat post cap can be painted, must use paint that adheres to plastic.

Almost all buyers agree that the cap fits with the inside diameter of the cap. And, a few say that the caps are held on with a roofing nail. Moreover, a few strongly agree that the cap is easy to glue down on top of posts, and should make the posts last longer with no water sitting on top. In short, many have used the cap for more than a few months without letup, and it shows no sign of giving up.

• This can be painted, must use a paint that adheres to plastic.
• This is made for a perfect fit and it is great for a great price.
• This can be secured with nails or glue, should be pre-drilled if secured with nails.
• This works well for 6x6, plus it fits nicely on 6x6 posts.

Best Classic Style: Fittings Plus Inc Flat Post Cap

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The Fittings Plus Inc Flat Post Cap's material feel more premium than its price would suggest. The fittings plus inc flat post cap should be able to handle its purpose and duties with ease. And, the cap allows for a perfect fit, It fits well and has great style. Above all, the fittings plus a flatpost cap are available in 3 colors: white, bronze and black.

Consequently, customers were eager to recommend it to friends and families.

• One of the newcomers and featured product.
• Good brand reputation.

Best For Elegant Look: Plum Fittings Flat Post Cap

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If you often find yourself scrambling for a convenient and suitable cap, Plum Fittings Flat Post Cap should be your first option for buying. The plum fittings flat postcap is made from high-quality and durable white vinyl that will not warp, discolor, or fade over time. Make sure this fits by entering your model number. And, it is easy to install, simply slide the cap inside the top of the post. Lastly, the plum fittings flat post cap is designed to fit internally on a true 5" x 5" vinyl fence post with full profile dimensions.

• This listing is for one white vinyl post cap.
• New and hot releases.

Best With Wood Post: Captiva Flat Post Cap

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Captiva offers a variety of caps for personal choice and yet maintains quality in all the variants. The Captiva Flat Post Cap is not permanent without protective spray (sold separately), will patina to a rustic green color. I wish the price per cap was lower on 4-packs. Moreover, it fits 5-1/2" square posts plus it is designed to provide the best protection from water. Finally, the captiva flat post cap is very simple, a 34" lip surrounds the edges of the wooden post for ultimate weather protection, and the 20.

• Save on higher quantities; price per cap is lower on 4-packs.
• Fits 5-1/2" square posts; interior dimension is 5-5/8".
• Seamless 1-piece design; screws included; 20-gauge copper, thickest on the market.
• Don't wait, your posts can't protect themselves.