Thickness of plywood in bed storage area?

[Rondo]

Does anyone have an idea as to how thick the plywood is in the floor of the storage area under the bedroom mattress? And does anyone know what is under that plywood since it is an electric slide in our 2013 3582RL? Wanting to add something to the area and don't want to go through the wood and hit something if I put screws into the wood. I'm assuming there is some space since the bed is on rollers and moves in and out.
Thanks in advance for any replies and expertise you might have!

[dieselguy]

Take a known length screw and drive it thru the flooring next to the foot of the bed. Reach under the foot of the bed to estimate what's sticking out. I'd imagine the flooring is pretty thin.

[jcurtis934]

The storage floor is thin...slightly more than quarter inch if I remember correctly. Below that is air mostly. In the 3800, that is where they run stuff for washer/dryer since we have cabinets in the hall for them. There is only a couple of screws holding the ply in place on our bed frame. Yours can't be that different or difficult to remove and then you will know exactly what the factory did on your unit. They aren't always the same even if someone else has the same year and model. John