Penn Elcom 1U Rack Drawer with 2 Slam Locks R1291K/2L

I have purchased many of these drawers and have been unable to find anything better. Its very durable, but the plastic slam locks may break on you. Penn Elcom does sell replacements, and they are very easy to replace. If you have devices with cables that need to come out of the tray, and you do not have space above and below the drawer you will have to cut your own hole in the back, and add a rubber grommet to protect your cables. If the back had knock outs with rubber grommet sizes available from McMaster Carr that would be ideal. Item 9600K49 was the best size I could find to maximize the available space without the grommet bumping into whatever is above or below the drawer. With repeated use the lock nuts provided with the rails tend to come loose. I replace those with 8/32 machine screws and nylon lock nuts and haven't had a problem since.