Best 4 Decking Caps in 2026

!! WARNING !! Works ONLY with TRUE / ACTUAL 5.5" x 5.5" Post Size. !! Will NOT Work with Actual 6" x 6" Posts !!

Easy installation - includes all mounting hardware needed for installation (2 black stainless steel screws). Holes should be pre-drilled in post for easier fastening.

Made of high quality cast aluminum - Black Finish Powder Coated.

[FIT] Fits 3.5" x 3.5" (4" nominal) standard wood post. Pyramid design also fits standard 4x4 mailbox, deck, lamp post, dock and piling posts.

[MULTI-PACK] 4 (Four) Gloss Black Powder Coated Post Caps with screws made of sturdy cast aluminum.

[PROTECTS] 4x4 Aluminum Fence Post Caps won't deteriorate or warp like wood, plastic or resin will. Protects your post tops from rain and sun to prevent premature rotting!

【Two Color Modes】They have 8 LEDs and two modes (Warm White & Cool White). The Siedinlar solar post lights adopt a unique seagull shape, and the diamond lampshade can project bright light on the posts at night, forming a beautiful landscape.

【Easy to Use】Solar post lights is fit for 4x4, 5x5 vinyl posts and 4x4, 5x5, 6x6 inch wooden posts. You can switch according to your preference to beautify your fence, deck, porch, pillar, mailbox or dock, etc.

【Solar Powered】The solar fence post light is made of durable ABS, making it a great combination of style and durability, giving your fence a unique touch that catches attention.

Fits over a 6” x 6” nominal post

Extends the life of your fence or deck post while preventing cracking, splitting and weathering.

Its sleek, elegant and simple pyramid design will complement any project or space

【Fit for wood post size】: The interior dimension of this 4x4 matte black pyramid cap is 3-5/8" x 3-5/8", made for 3.5" x 3.5" up to 3.625" x 3.625" size post(NOT for other size post). Robust and beautiful!

【Product size】: The height of the 4x4 pyramid post caps is 1.58in/4cm, 0.6in/1.5cm lip extends down side of wood post, sidewall thickness is 2mm. The solid thickness and reasonable size layout make it look well-proportioned and generous.

【Sturdy pyramid shape】: This 4x4 matte black pyramid post cap cover is made of high-quality aluminum alloy, finished with a durable layer of powder-coat paint on its surface, allows it to withstand heavy wind and rains, 100% Anti-corrosion/rust-proof. UV-Protected, Prevent from fading due to sun exposure. Longer lifetime!

Decorative Pyramid Design

Fits over 2" x 2" square steel or aluminum posts. Designed for outdoor use.

Easy installation - Pressure Fit - no hardware needed.

Decorative Ball Top Design.

Fits over 3" x 3" square steel or aluminum posts.

Easy installation - Pressure Fit - no hardware needed.

[FIT] Fits 3.5" x 3.5" (4" nominal) standard wood post. Pyramid design also fits standard 4x4 mailbox, deck, lamp post, dock and piling posts.

[SINGLE-PACK] 1 (One) Gloss White Powder Coated Post Cap with screws made of sturdy cast aluminum.

[PROTECTS] 4x4 Aluminum Fence Post Caps won't deteriorate or warp like wood, plastic or resin will. Protects your post tops from rain and sun to prevent premature rotting!

PREMIUM 4x4 VINYL POST SLEEVE: Weatherables Post Sleeves are the simple solution to outdoor deck post upgrades and refurbishments, offering a lasting yet low-maintenance fix for any standard deck mount, post, and railing.

DURABLE & LONG-LASTING: These premium quality PVC fence post sleeves are made from durable, water and UV-resistant PVC vinyl. Once applied to your deck railing posts, patio fence, or mailbox post, the lasting, waterproof vinyl won’t fade, discolor, or warp.

EASY TO INSTALL: Enjoy the easy installation of a new outdoor fence post sleeve, which can be routed on-site. Installation is as easy as sliding the 4x4 post sleeve over a wood post or concrete mount.

Long-lasting post caps – Zinc-galvanized finish offers the most durable protection against outdoor heat and corrosion compared to zinc-plating and black oxide coating

Standardized convenient fit – fits 3.5" x 3.5" square wooden fence or deck posts and each metal cap comes with pre-drilled screw-holes with FREE 2 pcs screws per cap (total of 20 pcs for the 10 pc - set)

Better anti-rust design – rounded pyramid design for added safety and a typical maintenance-free galvanized surface to minimize water retention and help prevent rain-water stains

4x4 (3-5/8" x 3-5/8") Plastic Black Fence Post Caps - 16 Pack

Cap presses over the outside of a 4x4 (3-5/8" x 3-5/8") Post, a little flex, but will Not Stretch. Must be secured with nails or an adhesive that bonds to plastic and wood, should be pre-drilled if securing with nails

Inside Dimension 3-5/8" x 3-5/8" Square, 1/8-inch-thick to protect your treated posts from water and sun damage

★Vinyl fence pyramid post cap is made of durable, low-maintenance vinyl

★Inside Vinyl/PVC post cap dimensions are 4" x 4". 4" square cap with a sharp corner radius

★Vinyl fence post cap fit for snugly over 4" vinyl posts. Cap extends approx 7/8" down side of post

ATTRACTIVE AND PRACTICAL – top a hollow 5-inch-square vinyl fence post and add a stylish accent, too.

EASY MAINTENANCE – you won’t need to paint this tough, non-porous white vinyl, and it resists yellowing. Just clean with water and mild detergent.

INSTALL IN MINUTES – use PVC vinyl cement and slide over fence post (model number 125945 & 194164). That’s it!

Sturdy & Stable: Product Size: 6.5 x 3.8 x 5.5"/ 16.4 x 9.6 x 14 cm; Quantity: 5 PCs; Item Weight: 2.5 lbs; The black post base adopts 2 mm thick steel plate with powder coating process. It can keep the post anchor from corrosion.

Use for 4 x 4" Post: The post base allows the installation of wood posts of 4 x 4 inches(actual 3.5"x 3.5" dry post on market). The standard diameter can avoid swaying of wood posts.

Easy to Install: The simple and convenient usage can be provided. You can quickly use the fence bracket with the user manual. The installation method is also time-saving and effortless by using the wrench.

Made of Brushed Solid Copper.

Fits 3-1/2" x 3-1/2" wood post (standard 4 x 4). WILL NOT FIT A FULL 4x4 POST

Actual base opening is 3-5/8" with a 3/8" lip and overall height of 1-1/2".

100% Solid Copper Construction: Designed to fit over a standard 6x6 post that measure 5 1/2" x 5 1/2"

Measurements: Base opening is 5-5/8" with a 1/2" lip and overall height of 2-1/8".

Installation: Easily installs by applying outdoor adhesive on the inside lip of the cap.

Perfect Fit: These 6x6 fence post caps are for posts measuring 5.5 inches x 5.5 inches up to 5.75 inches x 5.75 inches.

10-Year Guarantee: We stand behind the quality of our products and offer a 10-year guarantee, giving you peace of mind and ensuring your satisfaction with your purchase. Molded from ASA resin, caps will withstand the harshest weather conditions.

Easy to Install: Our snap on design makes installation quick and easy. Simply place the base on the deck post, attach it to the base with the included screws, and snap the top on the base for a secure fit. That's all it takes, and the screws are hidden after installing

【DURABLE & HIGH QUALITY MATERIAL】The fence post driver is made of durable steel with premium, corrosion-resistant powder coating finish of black. Our post hole digger is anti-scratch, anti-fading and anti-rust with the long last metal finishes, loop solid handles.

【A GREAT HEAVY DUTY TOOL】This high-quality fence post driver makes it easy for you to drive wooden fence posts deep into the soil. It is a great tool to designed to drive t-post, wood, metal or any type of fence posts for your garden, farm or backyard. Post driver manual is more labor-saving and safer than a hammer, it minimize damage to the top of the post. We suggest wear gloves when using.

【EASY TO USE】The t post driver features two handles on both sides of the driver making it easy to move. Metal post driver makes installing U-Posts and T-Posts easily, you can place the fence post driver over post simply and lift and release the driver until post is at desired depth in the ground. Please ensure the fence post is vertical to the ground when using.

DURABLE ALUMINUM CONSTRUCTION- Once installed, these metal post caps are practically maintenance free! The weather resistant aluminum construction is designed to handle the outdoor elements, and features a powder-coated finish to add a touch of style to any spot in your backyard.

DRESS UP YOUR YARD - Let's be honest, fences can be boring and not the best item in your yard to look at. 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.

DESIGNED FOR WOOD POSTS - Designed to specifically fit on a 4 x 4 nominal wood post, the GreenLighting Aluminum Pyramid Post Cap is your one-stop solution for dressing up those plain fences. Not suitable for PVC or Vinyl posts.

Professional Version READ CAREFULLY AS TRIMMING POSTS MAY BE REQUIRE - Pro Version - SCREWS NOT INCLUDED so as to provide more fastener choices

ATTENTION: PLEASE UNDERSTAND POST SIZE AND USE FULLY 3.5"x3.5" - Perfect for deck supports, porch railing, post holders. Also, can be used as table leg. - Professional Version READ CAREFULLY AS TRIMMING POSTS MAY BE REQUIRED -

Perfect for deck supports, porch railing, hand rails and post holders. Also, can be used as table leg or mailbox support 3.5 inches x 3.5 inches (commonly called 4x4)4x4)

SAVE YOUR BACK: Quick, lightweight patent pending technology replaces 80-100lbs of concrete with a lightweight bag that does not require messy mixing with water that requires cleanup & preparation for filling post holes

FAST & SECURE: Ready to build in 15 minutes, and mixes in seconds in place and in the bag. All that you need in a compact and lightweight 32.8 oz bag that mixes into a waterproof protection for your fence posts.

PRO TECHNOLOGY: It's the same technology used to set utility poles by the professionals. Now you can quickly and securely set your fence posts and mail posts with a minimum of fuss & mess securely.

SIZE & FIT: This post cap ONLY fits 4" x 4" vinyl posts( ACTUAL SIZE). NOT FOR wood posts.

VINYL HOUSING: This post cap is made of durable, low-maintenance vinyl. Use it to cover the top of your vinyl fence post and it can protect your hollow post from cracking, yellowing or water-logging.

ENHANCE YOUR HOMES’ APPEAL: This white pyramid post cap looks very exclusive. It adds a Finishing Touch to Your Vinyl Fence.

FITS 4X4 (actual 3.5"*3.5") WOOD POST -- The Interior diameter of the PP plastic post cap is 3.58"*3.58". PLEASE MEASURE YOUR FENCE POST CORRECTLY FIRST.

OPTIMUM PROTECTION -- The post tops are where the rain and sunlight first come to get in touch. With peaked design post caps keeps the rain rolling down, and the caps will reflect the UV to protect your wood post or fence. That means you won't be concerned that the top of your fence post will dry out the wood and crack, eventually leading to the post rot.

SQUIRRELS KEEP AWAY -- Birds and squirrels are known to sit on the fence posts, and their sharp paw will scratch the top of the wood post or fence. With PP plastic post caps, you could let that not happen to your beautiful wood post or rail.

White Vinyl Fence Picket Cap Made of Durable, Low-Maintenance Vinyl. For 7/8" x 3" Vinyl Pickets

Fits Internally on a 7/8" x 3" Vinyl Fence Picket Keeping Water etc Out of Your Vinyl Fence Pickets

Picket Vinyl Fence Caps Beautify the Look of Your Vinyl Picket Fence. Pointed Style Picket Cap

!! WARNING !! Works ONLY with TRUE / ACTUAL 6.0" x 6.0" Post Size. !! Will NOT Work with Actual 5.5" x 5.5" Posts.

NATURAL HIGH PYRAMID TOP DESIGNED FOR 4x4 POST: Inside dimensions of our post caps are 3-5/8" X 3-5/8" inches.

FUNCTIONAL & QUALITY DESIGN: Our post caps protect wood post tops from weather and insects. Available in multiple colors and styles to keep your fence beautiful year round.

EASY INSTALL: To attach each post cap style to the post, apply an exterior-grade silicone adhesive to the underside of the post cap and place firmly on the post.

HOW TO FIT: Fits 1 1/4" round (Outside Dimension) tube or pipe which can stretch up to 1/16” larger for a snug fit without tearing or splitting. 1" deep / tall to provide a secure fit.

EASY TO INSTALL: These Rubber Covers are easy to install 1 ¼”inch push-on caps serve as a long-lasting solution for many household, outdoor, & marine boat dock projects including replacements for fencing railing posts, steel gate rail stopper, rod / rebar or wrought iron caps, thread bolt screw or nut safety, hub cap sheath, or finishing any round tubing project.

FLOORING PROTECTION: These high-grade Prescott Plastics black Rubber caps work great for preventing scuffs on wood floor or as protection glides on chair tips, bench feet, table legs, bar stool foot sliders, chair leg protectors, patio furniture inserts, and much more. They are also designed to hold up against impact abuse, and harsh weather conditions.

6x6 (5-5/8" x 5-5/8") Plastic Black Fence Post Caps - Multipack Quantity Item - Please verify correct quantity needed

Please take time to measure your post not all 6x6 post are the same dimension. These caps are made for Nominal 6X6 fence post that measure 5-5/8"x 5-5/8"

Cap presses over the outside of a 6x6 (5-5/8" x 5-5/8") Post, a little flex, but will Not Stretch

These 5 5/8" post caps are designed to fit standard 6x6 Posts, and have a nail-in-place installation style that enhances the stability and lengthens the lifespan of these high-quality, fence post caps

It features a black polypropylene construction that is both weather and UV resistant, for long-lasting color and performance. Great, in high winds, rain, snow and sun

These sleek and durable post caps come in a pack size of 32 so you can easily tackle large fencing projects

Simple application - just roll, mix and pour

Sets in as fast as 3 minutes

High strength and resistant to uptake of water