Surface Mount Base Plate Kit – 4.5" x 4.5" Steel Plates (½" Thick) with Hardware

This heavy-duty base plate kit provides a secure and professional mount for aluminum deck or railing posts. Made from premium 6063-T6 aluminum alloy, it delivers excellent strength, stability, and corrosion resistance for long-term outdoor use. The plate installs easily on any flat surface and is finished in either durable AAMA-2604 powder coat or anodized brushed aluminum for a sleek, weather-resistant look.

Each kit includes one aluminum base plate, a neoprene rubber base pad, and a full hardware pack with 2.5″ stainless bolts, washers, and spacers — everything needed for a complete installation.

Material: 6063-T6 Aluminum Alloy
Finish Options: AAMA-2604 Powder Coat or Anodized (Brushed Black, Clear)
Included Components: 1 Base Plate, 1 Adhesive Foam Pad, 1 Neoprene Pad, Complete Hardware Pack (2.5″ Bolts, Washers, Spacers)
Screw Size: ¼″ × 2.5″
Corrosion Resistance: Enhanced Anodized Surface
Compatibility: Aluminum Deck-Mount Posts (Intermediate & Terminal)
Installation Type: Deck or Flat-Surface Mounting