A closure plate is a metal or plastic plate that is used to seal or cover an opening in a wall, floor, or ceiling. Closure plates can be used to seal openings that have been made for pipes, cables, or ventilation systems. They can also be used to seal openings in interior or exterior walls that have been made for doors or windows. Closure plates are usually made of steel, aluminum, plastic, or wood and are available in various sizes and thicknesses.

A closure cap is a small, round metal or plastic cover or plug that is used to seal or cover an opening in a wall, floor, or ceiling. Closure caps are often used to seal small openings that have been made for pipes, cables, or ventilation systems. They are usually made of steel, aluminum, plastic, or wood and are available in various sizes and thicknesses. Closure caps can be attached using screws or other fasteners