Measure the distance from the bottom of an adjacent cabinet door to the bottom of the interior cabinet.
Convert cabinet to garbage drawer.
You will be using that line as a guide for placing the two strips of wood which will hold the drawer hardware.
Measure up from the bottom of the cabinet sides and mark the height you ve just found the trash can height plus one inch with a pencil.
Since the hole in my cabinet was actually a little wider than the height of the doors i wanted to be able to re use the center frame piece to build out the cabinet frame to the correct width.
As one of my customers put it it brings the contents of the cabinet to you instead of you having to go into the cabinet and scrounge around for them it s relatively easy to convert a cabinet from doors to drawers.
A sturdy drawer on full extension slides gives you access to the cabinet s contents with a simple pull of the handles.
Use a level to extend that line across the width of the inside of the cabinet wall.