To fit correctly measure the width of the window plus 30/40cm (12-16), this will ensure your curtains will comfortably cover your window. Fit your track or pole approximately 15cm (6) above your window recess and centre ensuring you have 15-20cm (6-8) either side of the window.
A keg is a fancy version of your basic barrel. In the factory, a sheet of stainless steel is rolled into a cylinder and welded together. Then, at the cylinder's midpoint, a set of ribs is pressed into it for added rigidity. Next, top and bottom steel plates are stamped out and likewise welded into place.
The US beer barrel is officially defined as a volume unit which is equal to 31 gallons. This is why a full keg is named a half barrel, though it has 15.5 gallons. Most brewers use this kind of kegs, so we can make some calculations and answer how many beers are in a keg. One full keg contains: Almost seven 24-racks of 12 oz cans.