What is access panel?

The access panel is a device that is designed to provide check the valve, air hose and other air condition systems. It works to increase the efficiency of air conditioning units by check the air condition systems working.

A ceiling is the most common location for an access panel. 
One is also sometimes installed on walls or ceiling. The type, size, and location of the access panel depends on many factors. These include the layout of the building or room, location of walls and ceiling, and type of air conditioning system being used.
The desired look and function of the air conditioning diffuser will also affect how and where it is placed.