Beefy Heavy Duty Black Steel 3.6x3.6 Inch Square Post Base Caps For 4x4 Deck Posts 10 Pack Durable Anti Rust Powder Coated Metal Covers With Tight Fit For Outdoor Fences And Railing Posts
✔️ Inner size 3.6x3.6 in; fits standard 4x4 posts; 10 pack
The heavy duty black steel post base caps cap and protect 4x4 deck posts. Made from 2.0 mm steel with a black powder-coated finish, these caps resist corrosion and rust while delivering a matte, sturdy look for outdoor fences, rails, and posts. They’re ideal for decks, gardens, or farm setups where reliable post anchoring matters.
✅ 2.0 mm steel with black powder coating for anti-corrosion and rust resistance
✅ Internal size 3.6 x 3.6 inches, fits 4x4 posts (actual 3.5" x 3.5" on market)
✅ Includes 40 expansion pipes, 80 φ4.76 self-tapping screws, 40 φ6.35 screws
✅ Four pre-drilled holes on bottom and top for easy install
✅ Pack of 10 post base caps for outdoor fences and railing posts
💡 What is a post base cap used for in outdoor deck and railing installations?
Post base caps cover the top of square posts to seal out moisture, add a clean finish, and support reliable mounting for decks and fences.
- handy for protecting 4x4 posts in outdoor decking and fencing
- fits inner size 3.6 x 3.6 inches for secure restraint
- includes expansion pipes and self-tapping screws for fast setup
- powder-coated steel provides rust resistance in weather exposure