Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: What is the space between the porta filter and the tray?
Document: Frosted plastic would have solved that problem. The drip tray slides out too easily, often accidentally while I'm wiping off the counter. The filters are tight and difficult to remove from the filter holder for no good reason. But overall, I'm pleased with the Breville Cafe Roma. It's a good value, doesn't take up much space, and makes good espresso.
What this does is double heats the water inside the pump creating greater pressure for steaming milk. So far, no issues doing this and it's worked great ever since.The one down side is the porta filter does and will clog. Especially if you don't clean it immediately. There's little to no way to unclog it, you just have to call up Breville and get a replacement. Pain in the butt.Overall my gf and I have been very happy with the unit.
I didn't even use it when I discovered that the porta filter is made of aluminum. The hot concentrated acidic coffee exiting the so called "stainless" machine would be badly leached by contacting the aluminum in the porta filter. Drink at your own tastebud and health risk (alzheimer's etc)! Someone at Breville (aka accountant/bean counter type) is not in touch with the health concious public.
I bought this to replace another bad designed espresso maker a KitchenAid that I paid over a thousand dollars including tax. This started out just like the previous one,worked fine for 3 or 4 months and it became a pretty stainless steel space filler for our counter. The main problem with these is clogging filter that cant be cleaned properly. I don't think I will buy any more hi end makers.
I was looking for something classy looking and compact. The machine does not take up a lot of counter space which is great and it looks nice on my counter top. However, the machine does not make a lot of coffee in the first brew. It can only make a maximum of two cups at a time. I think it would be better if the coffee filter was deeper and could hold more coffee (4 cups at a time). Otherwise it adds a nice touch to the kitchen.
With only limited counter space and no need to make espresso for more than 2 to 4 people at any one time, the 40 oz tank is the right size. I am relatively new at the espresso game, so I am quite pleased with how consistently well the espresso is brewed. I see crema every time! The double walled filter and the springloaded filter holder work extremely well. The espresso is made within a few seconds of turning that dial to the "coffee cup."
It does continue to drip for a while after you turn it to the standby position. This isn't a big deal as you will have to clean the drip tray anyway once you are done.The grounds do come out watery in the filter after use, but this is how the machine is designed to work. Not a big deal - just a little messy. If you don't tamp down the grounds real hard it isn't as bad.
The two-serving filter makes a great double shot, but if you try to make more than that, I can see how you could end up with something watery. The drip tray does need emptying once in a while, but that's the same with every espresso maker I've ever used.I DEFINATELY recommend this machine! !
So, I know what I'm doing.The machine itself is simple but is simply all you need. Realize that buying an 'automatic' machine will have more cleaning, more working parts, and thus more maintenance required to keep it running. This machine just needs a rinse of the removable filter and the lower catch tray. Also give some love to the milk wand to keep it clean and patent. Then you're good to go for another day.
The frothing system, the drip tray, the simple controls are all top notch and the cup warming plate is over the top! The pop-up button that shows you the level of the water in the drip tray is a really nice feature. By adding the stainless demitasse cups and saucers Breville created the best machine on the earth. For those that have problems with getting the grounds out of the filter I found a stainless steel Knockout tray with 49mm Tamper that matches the machine and is easy to clean.
Answer: Approximately 5 inches with tray is in and 6in when tray is removed