304 Stainless Steel Square Flange Anchor Base For 4x4 Wood Posts On Deck Railings With 24 Screws Black Finish Built Tough Heavy Duty Hardware Actual 3.5x3.5 Inch Post Size 2 Pack

2-Pack Square Flange Anchor Base for 4x4 Posts
✔️ 304-stainless steel, 3.5x3.5in inner, 9 Ga wall, 6 Ga base

These square anchor bases are made from corrosion-resistant 304 stainless steel and are designed to anchor 4x4 wooden posts for deck railings, fences, handrails, pergolas, pavilions, and related outdoor structures. They provide a sturdy, rust-free connection that helps keep posts vertical and secure over time.

✅ Inner size 3.5x3.5 in to fit nominal 4x4 posts (actual 3.5x3.5 in)
✅ Heavy-duty wall thickness 9 Ga; base plate 6 Ga; net weight 3.7 lbs each
✅ Includes 24 wood-base screws; 2 square bases per pack
✅ Black finish, rust-resistant, reusable for decades

💡 What is a square flange anchor base used for with 4x4 wooden posts on decks and railings?

This handy piece keeps posts steady, prevents wobble, and extends outdoor life.

- Secure 4x4 posts in decks, fences, pergolas, and railing systems

- Stainless steel construction resists corrosion and wear

- Includes screws and two bases for quick, long-lasting installation