Medicare allows for mask cushion replacement every three (3) months, and a complete mask system replacement every six (6) months. CPAP manufacturers and vendors suggest these replacement schedules as well. In our experience, most mask cushions begin to deteriorate after about six months of use.
Hereâs what you do: 1  Figure out the length that you want your finished sleeve to be. On the outside of the shirt, mark that spot with a line. 2  Using a see-through ruler or regular ruler, mark a line 1 Â½â underneath the first line. Use the ruler to continue that line across the sleeve. 3  Repeat on the other sleeve.  Cut on the second line you drew.
We try to account for shrinkage with how long we cut the sleeves, so a 34â sleeve should measure 34.5â right out of the box. If the sleeves seem too long consider first that they will shrink with the first few washings. If they seem too short, consider adding 0.5â in addition to the amount you think they are too short.