Best current price£33.77from B&Q
Shopping.co.uk recommended and popular offers
B&Q£33.77Visit shop - Heavy Duty Galvanised ("h" Shape) Post Fence Foot Anchors Internal Size: 121mm4.75"
Visit shop2 offers from £33.77 - £42.97
View price history by clicking the chart icon.
The GRUNDLINE H-Shape Post Anchor is designed for homeowners and professional builders looking to create durable, long-lasting outdoor timber structures like pergolas, fences, and carports. Its primary benefit is the specialized H-design that elevates wood away from the concrete foundation, significantly reducing moisture absorption and rot, though users should note that a poured concrete foundation is mandatory for proper installation.
| Colour | Silver |
|---|---|
| Model Part Number | 4875 |
| Brand | GRUNDLINE |
No, this product is specifically designed to be embedded into a concrete foundation for stability and safety.
It provides exceptional resistance against corrosion, but in extremely high-saline or coastal environments, you should check for surface scratches that may require a cold-galvanizing touch-up.
These anchors are manufactured from S235 steel, a common structural grade known for its reliability and strength.
The hot-dip galvanization thickness is between 80-90µm.
You must select the anchor that matches your specific post size, such as the 121mm variant, to ensure a secure fit.
Ensure the bolts are tightened to the correct torque and that the timber size matches the anchor width exactly.
If the deviation is minor, it may be corrected with shim plates; for significant deviation, the anchor must be reset before the concrete fully cures.
Installation requires a level concrete foundation. To install, dig your post holes, fill them with concrete, and insert the anchor legs while the concrete is still wet, ensuring the level and alignment are correct before the concrete sets. Use high-quality carriage bolts to fasten the timber post to the side plates of the anchor. Compatibility is based on post width; ensure your timber dimensions match the specific anchor size (e.g., 121mm). Maintenance is minimal due to the heavy-duty galvanization, but it is recommended to inspect the bolt connections annually for tightness and clear away any accumulated debris from the base gap to ensure proper drainage.
