Cast Iron Ball Post Cap Fence & Gate Topper – Weld-On Slip-Over Pyramid Base for Square Steel Posts (2", 3", 4")

Top off your ornamental iron fences, driveway gates, and railing posts with heavy-duty Cast Iron Ball Post Caps from Pro Gate Supply. Designed specifically for standard square steel tubing, each cap features an integrated pyramid base collar that slips smoothly over your post to deflect rain and debris while providing a classic architectural finish.

KEY FEATURES

• Precision Slip-Fit Collar: Engineered with a 1/16" tolerance over standard post outer dimensions (2-1/16" ID for 2" posts, 3-1/16" ID for 3" posts, and 4-1/16" ID for 4" posts) to ensure easy slide-on alignment.

• Deep Welding Skirt: Features a generous skirt depth (9/16" on 2" caps; 3/4" on 3" & 4" caps) giving fabricators ample contact area for smooth, secure fillet or tack welds.

• Unfinished Bare Cast Iron: Supplied in raw mill finish—completely free of oil, paint, or coating—ready for immediate welding, priming, and powder coating or painting.

• Moisture & Corrosion Defense: The flared pyramid base sheds water away from the raw cut edges of hollow posts, eliminating pooling and internal corrosion.

• Hollow Ball Architecture: Combines authentic cast iron durability and solid visual presence without adding excessive top-heavy weight to gate leaves.

SIZE & FITMENT SPECIFICATIONS

• 2" Cap (PC-BALL-2-S1): Fits 2" x 2" square posts | Base ID: 2-1/16" | Ball Diameter: 1-13/16" | Height: 3-5/8" | Skirt: 9/16" | Weight: 0.93 lbs

• 3" Cap (PC-BALL-3-S1): Fits 3" x 3" square posts | Base ID: 3-1/16" | Ball Diameter: 2-5/16" | Height: 4-3/4" | Skirt: 3/4" | Weight: 1.95 lbs

• 4" Cap (PC-BALL-4-S1): Fits 4" x 4" square posts | Base ID: 4-1/16" | Ball Diameter: 2-3/4" | Height: 5" | Skirt: 3/4" | Weight: 3.21 lbs

INSTALLATION TIPS Ensure the top edge of your square steel post is deburred and free of weld slag before sliding the cap over the post. Tack weld along the bottom skirt seam using standard welding practices, or secure with high-strength structural metal adhesive if welding is not desired. Clean, prime, and coat promptly to prevent surface oxidation.