10% OFF

Metal Fence Post Caps

Regular price $4.99/per Unit
Sale price $4.99/per Unit Regular price $5.54
Sale Sold out
Unit price
/per 
Shipping calculated at checkout.
Available Freight Insured Returns 40-Year Warranty

“Such a huge truck! None the less, the driver got the panels in and safely placed!”

— Brian G., Seattle WA

“Melon did a great job and our panels arrived in great shape!”

— Richard S., Stevenson WA

“Milo did a great job I would use in the future”

— Brett R., Lake Stevens WA

“Exceptional and Professional! Thank you!”

— Dean R., Roseville CA

“Keith's delivery was perfect! Thank you!”

— Jeffrey J., Salem UT

“Our delivery driver Kieran went above and beyond to ensure safe delivery and placement of the order. We can highly recommend”

— Olga K., Banks OR

“Prompt, polite, professional”

— Darwin S., Hillsboro OR

“Everything arrived as ordered. Super friendly and helpful delivery driver!”

— GREGORY O., Moraga CA

“Driver is awesome. Good communication, on time, and helpful”

— Nick H., Encinitas CA

“Very polite driver and 2 days early!”

— Phyllis B., Mountain Center CA

“dropped nice and neat and a day early”

— Jono H., Sequim WA

“Driver Malik kept me updated on the delivery date/time. He was friendly and professional. Product was undamaged & looks good.”

— Richard R., Ramona CA

“Excellent delivery Thanks”

— Brad P., Livermore CA

“Braedon was fantastic. Delivered right where I wanted and he was fast, polite, and extremely helpful!”

— Matthew M., Santa Maria CA

“Braedon was very professional and helpful. Very satisfied.”

— Michael H., Tucson AZ

“Kieran did a great job delivering our fence panels and posts. I really appreciate how he communicated his arrival with us.”

— Angela A., Fort Collins CO

“Kieran was helpful & very nice. He kept us informed about his arrival time with text updates.”

— Mitchell G., Buena Vista CO

“Kieran was friendly, fast, answered all our questions. He placed the order where requested! Great service!”

— Grant R., Shoreline WA

“Received materials today. Driver (Kieran) is a great guy!”

— Robert R., Mission Viejo CA

“Excellent communication and great product!”

— Carol M., PORT ANGELES WA

“Keith went above and beyond on his delivery.”

— Camille M., Salinas CA

“Keith was very helpful while unloading. He zhas a high regard for customer service. He is a very nice person. I will buy agai”

— RC H., CHICO CA

“It would have been 5 star if the factory hadn’t forgotten to load 4 out of the 10 posts I ordered”

— Arnie F., Upper Saddle River NJ

“Whatever you pay the guy who delivered everything, it’s not enough! Absolutely top-notch, very difficult access.”

— Benjamin E., Melrose MA

“Driver was great and great communication”

— Nathan R., Hansville WA

“Happy with results of delivery. Kieran was courteous, professional, helpful. Offload smooth, quality product, as described.”

— Ken P., Sequim WA

“Kieran is a great person! Very polite and respectful!”

— Connie R., Castle Rock WA

“Kieran was very efficient, professional, and friendly. Unloading by hand instead of palleted delivery takes a lot of time.”

— Aaron S., Colton OR

“Excellent customer service from the delivery driver, very communicative.”

— Preston T., McKinleyville CA

“Delivery agent was pleasant to deal with, very efficient and skilled.”

— Ted M., Ferndale CA

“Jeremy terrific. There was a problem with part of the delivery and he took pictures. He communicated with us, early/professio”

— gretchen R., Santa Rosa CA

“Driver was friendly and communicative.”

— Mikol F., Oceanside CA

“. Kind, considerate, efficient, Kieran made it absolutely easy.”

— Christopher F., Vashon WA

“I am very impressed with the service of the people in your company and the pricing of your product, thank you!”

— Edward C., Pine AZ

“Driver was very nice and cordial”

— kevin S., Cheney WA

“The delivery driver was very pleasant and cordial. The delivery was a great experience. Ask him if he liked Buccee's?”

— Craig S., Celina TX

“The delivery went very smoothly. The driver was amazing and so communicative. He kept me informed every step of the journey.”

— Nancy A., DALLAS TX

“Patrick was very professional and helpful. Probably one of the best deliveries I have received in a long time. Thank you!”

— Gail S., Corpus Christi TX

“After a very very long delay after paying for our order, our delivery driver PATRICK WAS THE BEST!”

— Charles B., Pagosa Springs CO

“Hardworking dedicated fast helpful man. Very representative of a quality company”

— Mike M., McCall ID
This is a pre order item. We will ship it when it becomes available.
Summary

Galvanized steel post caps that stop water from pooling at the top of wood posts, preventing the cracking, splitting, and decay that ruins post tops. Corrosion-resistant steel in a sleek Midnight Black finish adds a sharp, modern line to your fence. Fits nominal 3.5"x3.5" (4x4) and nominal 5.5"x5.5" (6x6) posts, in Black or Silver. Slips on by hand, no tools needed, and can be screwed down for extra hold in high-wind or stormy regions. Low-maintenance protection for fences, decks, and pergolas.

Specifications

MEASUREMENTS

Fits nominal 3.5"x3.5" (4"x4") and nominal 5.5"x5.5" (6"x6") posts.

Description

Galvanized Metal Post Caps – Weatherproof Wood Post Protection

Why Choose Galvanized Metal Post Caps

Shield your wood fence and deck posts from rain, snow and rot with BarrierBoss galvanized metal post caps. Crafted from corrosion-resistant steel with a sleek Black finish, these caps prevent moisture damage and add a sharp, finished look that lasts.

Pro Tip: Apply a thin bead of exterior-grade silicone under each cap before sliding it on for an even tighter seal against water infiltration.

Built to Protect Wood Posts in Any Climate

BarrierBoss galvanized metal post caps are designed specifically for wood fence and deck posts, stopping water from pooling at the top and causing cracking, splitting or decay. Made from high-grade galvanized steel with a durable Black finish, these caps offer superior rust resistance and a clean, modern appearance that elevates your fence line.

Fits standard wood post sizes: nominal 3.5"x3.5" (commonly sold as 4x4) and nominal 5.5"x5.5" (commonly sold as 6x6). Each cap slides on easily and can be secured with screws for maximum hold — even in high-wind or stormy regions. No special tools needed.

Ideal for residential fences, decks, pergolas or garden borders where wood posts need long-term protection without constant maintenance or staining.

Did You Know? Every BarrierBoss post cap is precision-cut and galvanized for all-weather defense, making them ideal for humid, rainy or sun-exposed climates across the U.S.

Features & Benefits

  • Constructed from corrosion-resistant galvanized steel
  • Black finish for sleek, modern curb appeal
  • Fits nominal 3.5"x3.5" (4x4) and nominal 5.5"x5.5" (6x6) wood posts
  • Prevents moisture damage, cracking and decay at post tops
  • Easy slip-on install — secure with screws for extra hold
  • Low-maintenance solution for fences, decks and pergolas
  • Ideal for residential or light agricultural fencing systems

Key Takeaways

  • Protects wood posts from long-term weather damage
  • Galvanized steel and Black finish ensure longevity and style
  • Fits standard 4x4 (nominal 3.5"x3.5") and nominal 5.5"x5.5" (6x6) wood posts
  • Easy-to-install design for fences, decks and outdoor structures

Deep Dive Into Galvanized Metal Post Caps

Shop the Look

>

Technical Specifications

Material Galvanized steel with HDP paint on both sides
Sizes 4"x4" and 6"x6" caps
Finish Hot-dip galvanized + painted
Warranty 40-year warranty
Brand BarrierBoss
💰 BarrierBucks
  • 5% back on every order, as store credit on your BarrierBoss account. No minimum, no tiers, and nothing to sign up for.
  • Added automatically once your order ships. Nothing to claim and no code to enter — your balance is simply waiting at checkout next time.
  • Spend it on anything we make — panels, posts, gates or hardware. It comes off your total like cash.
  • Earns up to $500 per order. The figure above follows the size and quantity you have selected.
  • Samples are already fully credited back, so they do not earn BarrierBucks on top.
⚖️ How We Compare
 BARRIERBOSSWood FenceVinylChain-Link
Rust & finishGalvanized steel + dip-coatRots & graysFades & cracksRusts at cuts
Fire-resistantSolid steel, non-combustibleFuels fireMeltsCoating burns
Frame choicePressure-treated or Western Red CedarBasic woodNoneNone
Warranty40-year vs rust, fade & corrosion10–15 yrs~20 yrs10–15 yrs
Built & delivered by usFactory-direct & made in North America, delivered & unloaded by our own trucksRetail, you haulRetail, you haulRetail, you haul

BarrierBoss specs from this product; competitor columns reflect typical products in each category.

🚚 Shipping & Delivery
ServiceDeliveryArrives
Delivered & UnloadedAny product, any quantity — one truck, one charge $99 flat, and free over $2,500 Nov 17 – Dec 15
ServiceDelivery to youArrives
Delivered & UnloadedAny product, any quantity — one truck, one charge $99 flat, and free over $2,500 Nov 17 – Dec 15
ServiceDelivery to youArrives
DeliveryAny product, any quantity Enter your ZIP for the exact rateone flat price everywhere we deliver Nov 17 – Dec 15
ServiceDelivery to youArrives
DeliveryNot available in your area—

We deliver on our own trucks and don’t hand freight to LTL carriers, so we can’t reach your area yet.

$500 order minimum. Every delivery takes our own truck and crew, so the minimum is what keeps our lead times and build quality where they are.

Our own trucks — no broker, no depot, no LTL terminal. Our crew unloads and sets it where you want it, and every load is freight-insured: damage in transit is replaced or refunded at no cost.

Rated 4.5 · Based on 100+ delivery reviews Our own trucks · unloaded on your property

“Such a huge truck! None the less, the driver got the panels in and safely placed!”

— Brian G., Seattle WA

“Melon did a great job and our panels arrived in great shape!”

— Richard S., Stevenson WA

“Milo did a great job I would use in the future”

— Brett R., Lake Stevens WA

“Exceptional and Professional! Thank you!”

— Dean R., Roseville CA

“Keith's delivery was perfect! Thank you!”

— Jeffrey J., Salem UT

“Our delivery driver Kieran went above and beyond to ensure safe delivery and placement of the order. We can highly recommend”

— Olga K., Banks OR

“Prompt, polite, professional”

— Darwin S., Hillsboro OR

“Everything arrived as ordered. Super friendly and helpful delivery driver!”

— GREGORY O., Moraga CA

“Driver is awesome. Good communication, on time, and helpful”

— Nick H., Encinitas CA

“Very polite driver and 2 days early!”

— Phyllis B., Mountain Center CA

“dropped nice and neat and a day early”

— Jono H., Sequim WA

“Driver Malik kept me updated on the delivery date/time. He was friendly and professional. Product was undamaged & looks good.”

— Richard R., Ramona CA

“Excellent delivery Thanks”

— Brad P., Livermore CA

“Braedon was fantastic. Delivered right where I wanted and he was fast, polite, and extremely helpful!”

— Matthew M., Santa Maria CA

“Braedon was very professional and helpful. Very satisfied.”

— Michael H., Tucson AZ

“Kieran did a great job delivering our fence panels and posts. I really appreciate how he communicated his arrival with us.”

— Angela A., Fort Collins CO

“Kieran was helpful & very nice. He kept us informed about his arrival time with text updates.”

— Mitchell G., Buena Vista CO

“Kieran was friendly, fast, answered all our questions. He placed the order where requested! Great service!”

— Grant R., Shoreline WA

“Received materials today. Driver (Kieran) is a great guy!”

— Robert R., Mission Viejo CA

“Excellent communication and great product!”

— Carol M., PORT ANGELES WA

“Keith went above and beyond on his delivery.”

— Camille M., Salinas CA

“Keith was very helpful while unloading. He zhas a high regard for customer service. He is a very nice person. I will buy agai”

— RC H., CHICO CA

“It would have been 5 star if the factory hadn’t forgotten to load 4 out of the 10 posts I ordered”

— Arnie F., Upper Saddle River NJ

“Whatever you pay the guy who delivered everything, it’s not enough! Absolutely top-notch, very difficult access.”

— Benjamin E., Melrose MA

“Driver was great and great communication”

— Nathan R., Hansville WA

“Happy with results of delivery. Kieran was courteous, professional, helpful. Offload smooth, quality product, as described.”

— Ken P., Sequim WA

“Kieran is a great person! Very polite and respectful!”

— Connie R., Castle Rock WA

“Kieran was very efficient, professional, and friendly. Unloading by hand instead of palleted delivery takes a lot of time.”

— Aaron S., Colton OR

“Excellent customer service from the delivery driver, very communicative.”

— Preston T., McKinleyville CA

“Delivery agent was pleasant to deal with, very efficient and skilled.”

— Ted M., Ferndale CA

“Jeremy terrific. There was a problem with part of the delivery and he took pictures. He communicated with us, early/professio”

— gretchen R., Santa Rosa CA

“Driver was friendly and communicative.”

— Mikol F., Oceanside CA

“. Kind, considerate, efficient, Kieran made it absolutely easy.”

— Christopher F., Vashon WA

“I am very impressed with the service of the people in your company and the pricing of your product, thank you!”

— Edward C., Pine AZ

“Driver was very nice and cordial”

— kevin S., Cheney WA

“The delivery driver was very pleasant and cordial. The delivery was a great experience. Ask him if he liked Buccee's?”

— Craig S., Celina TX

“The delivery went very smoothly. The driver was amazing and so communicative. He kept me informed every step of the journey.”

— Nancy A., DALLAS TX

“Patrick was very professional and helpful. Probably one of the best deliveries I have received in a long time. Thank you!”

— Gail S., Corpus Christi TX

“After a very very long delay after paying for our order, our delivery driver PATRICK WAS THE BEST!”

— Charles B., Pagosa Springs CO

“Hardworking dedicated fast helpful man. Very representative of a quality company”

— Mike M., McCall ID
🏬 Pickup Options

Decades working steel — every piece artisan-crafted and hand-assembled in small batches, direct to your door. Years at the trade taught us exactly how steel should be cut, coated, and finished — and that same obsession goes into every panel we build. No mass-production line, no shortcuts: just fences made to outlast the property they protect. Now we’re putting down roots: a U.S. facility network, one yard at a time. Until your nearest location opens, we deliver & unload right on your property.

Washington
Pacific Northwest
OPENING Q3 2027
Arizona City, AZ
Southwest U.S. hub
Q4 2027
Georgia
Southeast U.S.
Q1 2028
Pennsylvania
Northeast U.S.
Q2 2028
📐 Custom Sizing

Most projects fit the sizes listed on this page — those are what we build, stock and price online.

We do make custom sizes within our standard range, and we quote them case by case. If your run falls between two listed sizes — say you need 7′ 6″ when we list 7′ and 8′ — we can build it. The cost depends on the dimensions, the profile and how much material the cut leaves behind, so custom sizes are not listed or priced on the site. Send us the measurements and we will tell you what is possible and what it costs.

Custom sizes are final sale. A panel cut to your dimensions cannot be restocked or sold to anyone else, so custom-sized orders cannot be returned or exchanged. Please confirm your measurements before you approve the quote.

These products can all be modified on site. Trimming a panel to close out a run is normal work, and you do not need us to do it for you — ask and we will walk you through how to cut and seal it properly so the finish holds up.

Just know that a cut edge is no longer a factory edge: cutting or drilling exposes unprotected steel and voids the steel & coating warranty on that component. Done the right way and sealed properly it will still last — so ask us before you cut.

🏅 Warranty
BarrierBoss 40-year warranty on the steel post caps and factory coating finish.
↺ Returns
  • Standard-size items (unused, original condition) — returnable within 30 days, subject to a 25% restocking fee. We pick returns up on our own trucks (scheduled around truck availability), at no return-freight charge to you. Because we handle the transport, you're not liable for any transit damage.
  • Custom, cut-to-size & made-to-order items — because these are built to your exact spec, they are final sale.
  • Cancellations — full refund before your order enters production; once in production or scheduled to ship, a 25% restocking fee applies.
  • Damaged or defective on arrival — fully covered. Every shipment is freight-insured end to end, so anything that arrives damaged is replaced or refunded at no cost — you're never on the hook for transit damage.
💬 Contact & Support

Reach a real person on our team — no bots, no hold music.

  • 📞 Call or text 1-888-306-BOSS (2677)
  • ✉️ Email orders@barrierbossusa.com
  • 💬 Live chat — bottom-right corner

Sizing, freight timing, custom orders & order status — Monday–Friday.

Made, Moved & Unloaded by Us.

Best in Class Warranty

Secure Checkout and Payment Plans

Pairs well with...

SKU: FPC-44NO3-BK

Vendor BarrierBoss

Complete Your Build

Black Hog Wire Fence Panels ★★★★★★★★★★ 4.83187 reviews from $35.99 /per PanelAvailableChoose Options
Corrugated Metal Fence Sheets ★★★★★★★★★★ 5.025 reviews from $31.49 /per SheetAvailableChoose Options
Black Metal Hog Track Kit ★★★★★★★★★★ 5.01 review from $75.49 /per KitAvailableChoose Options
Hog Wire Fence Gates ★★★★★★★★★★ 4.147 reviews from $324.99 /per GateAvailableChoose Options
Dog peeking through the round pet window of a black corrugated metal privacy gate mounted on 6×6 treated posts.
Because really good boys deserve a good view.

The Puppy Peek Window — Tested by Barrier Bob

Want to Make Your Own?
Hog Wire, Metal Fencing & More

Featured Projects

BARRIERBOSS USA
BARRIERBOSS USA
BARRIERBOSS USA
BARRIERBOSS USA
BARRIERBOSS USA
The Rigid® and firesmart® fence by barrierboss

Hog Wire and Metal Fence

hog wire fence usa
The First DIY Metal Fence Kit on The Market

DIY Metal Fence Kit Assembly Video

BARRIERBOSS USA
commercial grade full metal fence kit

The Deep South FireSmart Install Guide

See It In Action

Black Frame Metal Privacy Fence Kit | BarrierBoss® USA