Heavy Duty 4x4 Post Anchor 4-Pack - U Shape Fence Post Base for Wet Concrete Installation, 14" Ground Spike Bracket for Fence, Deck, Pergola, Railing, Mailbox- Fits for 4x4 Wood (Inner Dia 3.6"x3.6")

1.Product Specifications Material: ASTM A36 Carbon Steel (2.6mm thickness) | Dimensions: 14" Total Height (8" ground spike + 6" U-bracket), Inner Diameter 3.6"x3.6" | Coating: Triple-layer Black Powder Coating (RAL 9005) | Hardware: 48x M4x45mm screws, 4x M10x120mm bolts, 8 washers, 4 nuts | Tools: M10 drill bit + 17mm socket | Package: 4 anchors in triple-wall box (4.7kg) 2.Why Choose Demimy Post Anchor? ✅ Time-Saving No-Dig Installation: Insert directly into wet concrete—complete 32ft fence installation in 2 hours vs. traditional all-day digging. Pre-marked holes + included drill bit eliminate alignment errors. ✅ Hurricane-Proof Stability: Cross-connected legs increase load distribution by 70% (Miami-Dade NOA-20-1217.1 tested), preventing post sway even in coastal high-wind zones. ✅ True Corrosion Defense: Triple-layer coating withstands saltwater, fertilizer, and humidity—verified by 500hr ASTM B117 salt spray test. No rust after rain exposure. ✅ Smart Maintenance Solution: Replace rotten wood posts in minutes without concrete removal—save $200+ in future labor costs. ✅ Complete Kit Guarantee: No hidden costs. All hardware and tools included—unlike competitors requiring extra screw purchases. 3.Real Application Scenarios Rocky Soil Fencing: Install backyard fences where digging is difficult—simply pour concrete and set anchors. Patio Pergola Support: Secure 10ft tall pergola posts with confidence; cross-bracing prevents wobble. Coastal Mailbox Posts: Withstand salt spray and hurricane winds on Florida beach properties. Vineyard Gate Stability: Resist fertilizer corrosion in Napa Valley agricultural settings. Emergency Repairs: Replace a rotten mailbox post during storm season in under 15 minutes—no waiting for new concrete cure.

• All-in-One Wet Concrete Post Anchor Kit: Specifically engineered for standard 4x4 wood posts (inner diameter 3.6"x3.6"), this U shape post anchor provides rock-solid foundation for fences, decks, pergolas, railings, and mailbox posts. Install directly into wet concrete—no deep digging required—saving 60+ minutes per post versus traditional methods
• Versatile Outdoor Stability Solutions: Perfect for backyard fences on rocky soil, patio pergola supports, deck railing foundations, and coastal mailbox posts. Cross-bar reinforced legs prevent post sway and tilt even in sandy terrain or 100mph wind zones (ICC-ES AC257 certified), ensuring long-term structural integrity for projects up to 10ft tall
• Superior Corrosion Defense vs Competitors: Unlike thin-gauge alternatives that rust quickly, our 2.6mm ASTM A36 carbon steel features triple-layer black powder coating validated by 500+ hour salt spray test (ASTM B117). Resists saltwater, fertilizer corrosion, and humidity—outlasting galvanized models 3:1 in beachfront or agricultural environments
• Future-Proof Maintenance Design: When wood posts eventually rot, replace them in under 15 minutes without breaking concrete. Simply unscrew the old post and insert a new one—no re-pouring required. Pre-drilled alignment holes + included M10 drill bit ensure perfect positioning every time, eliminating frustrating "tight fit" issues common with competitors
• Complete Installation Ready Package: Each set includes 4 U-shaped post anchors (14" total height: 8" below ground spike + 6" bracket), 48 M4x45mm screws, 4 M10x120mm bolts, 8 washers, 4 nuts, plus M10 drill bit and 17mm socket. Industrial triple-wall packaging prevents shipping damage—everything arrives ready for immediate project start