HAYOHRT 15° Pergola Brackets Kit for 4x4 (3.5x3.5) Beams — Reinforced Carbon Steel with Post Bases & Hardware

HAYOHRT 15° pergola brackets are a complete steel mounting kit that creates a stable sloped-roof frame for 4x4 (actual 3.5 x 3.5 in) wooden beams.

This kit supplies the heavy-duty metal connectors and post bases needed to build a slanted pergola or small gazebo roof that sheds water efficiently. Made from carbon steel and reinforced at key stress points, the set includes corner brackets cut for a 75° fit, matching 15° sloped brackets, anchored post bases, and a full assortment of screws and expansion bolts so you can finish a basic assembly without hunting down extra hardware. The components are designed for outdoor structures like patios, terraces, carports, greenhouses and garden shelters where a gentle slope improves drainage and durability.

How do these brackets make a pergola more weather-resistant?

The 15° slope built into the brackets creates a continuous roof pitch that encourages rain and melting snow to drain away from the beams, reducing pooling and moisture exposure. Because the parts are carbon steel and reinforced, they hold the timber securely and resist warping under load.

• 15° slope for efficient water runoff and lower roof stress
• Reinforced carbon steel construction for long-term structural support
• Post bases lift wood off the ground to limit rot and moisture contact

What hardware does the kit include, and will I need extra fasteners?

The package arrives with two 75° corner brackets, two 15° sloped brackets, four post bases, 16 expansion bolts and 138 assorted screws sized for the included plates. For most standard installations using 4x4 posts, the supplied fasteners are sufficient, but specialty foundations or thicker beams might require additional anchors or longer bolts.

• 2 x 75° corner brackets for roof junctions
• 2 x 15° slanted brackets to form the pitched rafters
• 4 post bases, 16 expansion bolts and 138 screws for assembly

How difficult is installation and what should I prepare?

Installation is straightforward for anyone comfortable with basic carpentry and drilling. You’ll need common tools: a drill, level, wrench set and a saw capable of cutting a 15° bevel on the lumber so the beam seats flush against the sloped bracket.

• Cut beams to a matching 15° angle for proper fitment
• Use a level and temporary supports to align brackets during assembly
• Follow anchor torque recommendations for secure connections

Will these brackets fit my 4x4 lumber and different outdoor projects?

The brackets are sized for standard 4x4 posts (actual 3.5 x 3.5 in) and designed to work with sloped pergola configurations. Their versatile form factor makes them useful for balconies, carports, sheds, greenhouse frames, and other light to medium-duty outdoor structures.

• Sized to fit common 4x4 wooden beams (3.5 x 3.5 in actual)
• Applicable to patios, terraces, pergolas, carports and greenhouses
• Not intended for heavy structural loads without engineering review

Who is this for? The HAYOHRT 15° pergola bracket kit is aimed at DIYers, handymen and small contractors building outdoor timber structures who want a neat, sloped roof solution with everything needed for a basic install. Choose this kit if you plan to use 4x4 posts and want a straightforward way to add weather-shedding pitch and stable connections without sourcing multiple bespoke parts. Remember to cut the wood to a 15° bevel for correct assembly and to check local codes for anchoring and load requirements before installation.