Carcinoembryonic Antigen (CEA). Guide. The carcinoembryonic antigen (CEA) test measures the amount of this protein that may appear in the blood of some people who have certain kinds of cancers, especially cancer of the large intestine (colon and rectal cancer).arcinoembryonic Antigen (CEA). Guide. The carcinoembryonic antigen (CEA) test measures the amount of this protein that may appear in the blood of some people who have certain kinds of cancers, especially cancer of the large intestine (colon and rectal cancer).
Instructions. Measure the top of the chimney and the length, width and height of the flue. Build the bottom of the mold out of Â¾-inch plywood. Take the measurements of the top of the chimney and add 2 inches so the cap will overhang the chimney by 2 inches on all sides.Cut the plywood to that measurement by using a table saw or circular saw. Create the cutout for the flue.ake the measurements of the top of the chimney and add 2 inches so the cap will overhang the chimney by 2 inches on all sides. Cut the plywood to that measurement by using a table saw or circular saw. Create the cutout for the flue.
Framing the Roof Opening & Mounting the Chimney Support Box. After the chimney hole was cut in my roof, I then needed to build a frame to support the chimney box. The chimney box supports the weight of the chimney pipes, cap and roof transition components. Mine is 24â³ square. I used some left over roof truss material to frame the opening. I added two pieces to the existing lengthwise pieces so they were 24â³ apart. Using some clamps to hold the pieces in place, I then screwed these two pieces in place. Mounting the chimney support box was a bit tricky.