4x4 L Bracket Heavy Duty Pergola Corner Brackets

[Color: Black, Number of Items: 4]
I picked up these StickNGo 4x4x3.5 L Brackets because I needed some thick, sturdy brackets for an outdoor framing project, and they deliver impressive performance. Crafted from heavy-gauge 4mm thick carbon steel, these 90-degree right angle brackets are remarkably rigid and engineered to bear up to 500 lbs after correct installation, providing reliable structural reinforcement for backyard pergolas, deck railings, and wooden fences.The surface is finished with a durable black powder coat that offers excellent corrosion resistance and stands up smoothly against outdoor elements and moisture. Designed with a minimum fit size specifically tailored for standard 4x4 wood posts (actual 3.5" x 3.5" dimensions), they line up cleanly against timber joints. The multi-hole pre-drilled layout gives you multiple fastening positions to lock frames securely in place. If you need robust, professional-grade hardware that adds serious strength to heavy-duty DIY timber structures, this 4-pack is an outstanding choice.

[Color: Black, Number of Items: 4, Color: Black, Number of Items: 4]
These brackets are thick, heavy, and sturdy. I needed something to support some posts and these will do the trick. They are 4" in depth and height, and 3 1/2" in width. As far as I can see, they are a perfect 90 degree angle, so perfect to reinforce corners or for support uses.They are heavy duty and I do not see them bending in any way. They have a nice black powder-coated finish on them, so they look good in addition to being functional. In addition, the finish is excellent, with no sharp edges or unfinished parts.I intend to get more of these to help support a pergola that the previous owner installed. I do like that there are plenty of holes (9 in both sides) so plenty of space to put as many screws as you need in your application.Overall, these are very sturdy, wide support brackets that will definitely get the job done.

[Color: Black, Number of Items: 4]
Review of: 4x4x3.5 L Bracket, 4mm Thick Heavy Duty Black Corner Brackets 4PcsSynopsis: Good heavy-duty 4"x4"x235" L-brackets, with nice finish. Priced at $28.99 for four (4) brackets on 8/26/26 these brackets are not inexpensive but are a fair value compared to similar products.Pros: Dimensions are as advertised in product description. The measured 4 mm (5/32") thickness steel makes for a very strong bracket. It is stout, thick carbon steel that is nicely finished in matte black, with no burrs or blemishes in coating. The finish is reassuringly thick, promising good corrosion resistance and durability. The bracket corners are not chamfered, but are notched resulting in a pleasing appearance, and fit and function are as designed. Pleased with item.Cons: No mounting hardware (screws) were included with the brackets, so you must provide your own. The screw holes are not countersunk, so you should use hex head, cap head, or similar screws for mounting.Conclusion: Fair value for very robust, nicely finished L-brackets. Mounting hardware is not included. 4-Stars for meeting my expectations.

[Color: Black, Number of Items: 4, Color: Black, Number of Items: 4]
Great Support Strength. Made of 4mm thick heavy‑gauge carbon steel, our 4x4 corner brackets offer superior strength for outdoor builds. Each bracket can bear up to 500lbs after correct installation, reinforcing pergolas, deck railings and wooden fences

[Color: Black, Number of Items: 4]
These L brackets feel very solid and substantial. The 4mm-thick steel construction gives them plenty of strength, and the black powder-coated finish has a clean, durable appearance that works well for both indoor and outdoor projects.The 4x4 size is especially useful for reinforcing wood posts, shelves, and other larger DIY projects. They’re straightforward to install and provide a nice, sturdy connection at 90 degrees.Overall, these are heavy-duty brackets that feel like they can handle serious projects. The powder coating is a nice touch for outdoor use, and the four-piece set makes it easy to reinforce multiple corners.

[Color: Black, Number of Items: 4, Color: Black, Number of Items: 4]
Solid heavy duty brackets. The paint is hardy and baked on. The hole arrangement allows for universal attachment. These will hold up over time! At nearly 1/8” thick these are very heavy duty. Highly recommended for outdoor weight bearing applications. Fair value for the 4-set is in the $30 range.

[Color: Black, Number of Items: 4, Color: Black, Number of Items: 4]
The StickNGo 4x4 Heavy Duty Black Corner Brackets (4-Pack) are just what they say...heavy duty.Some key features are:1. Heavy gauge carbon steel that is 4mm thick construction for serious structural strength. Each bracket is rated to bear up to 500 lbs after correct installation.2. Premium black powder coated finish that is corrosion resistant and weather rated for outdoor use, great for pergolas, deck railings, and fences.3. Perfect 90 degree angle, designed specifically for 4x4 wood posts, keeps joints square and secure.4. Multi hole layout, pre drilled holes offer multiple mounting positions for flexibility in various DIY builds.5. Versatile applications, ideal for pergolas, deck railing posts, wood fences, shelves, and custom outdoor furniture.If you like DIY home improvement projects, and have outdoor structures like fencing and a greenhouse, these heavy-duty brackets are a great addition for any upcoming builds.