18x18 Contemporary Gold Wood Shadow Box Square Frame - UV Acrylic, Acid Free Backing, Hanging Hardware Included! This Shadow Box Frame Has Interior Dimensions of 18x18 Inches. Overall dimensions 19.25x19.25 Inches. Moulding Width: 1.25 Inches - Rabbet Depth: 1 9/16 Inches UV Resistant Frame Grade Acrylic Sheet & Acid Free Backing Included. Hanging Hardware included for vertical or horizontal display.