Any vent is usually the size of the drain or waste pipe it is connected to. 3 or 4 inch on a toilet.
2in
2in x 2in - check travel.state.gov for all the specifications though
2in.
1 diamond at the size of 3in height and 2in width is $341
35" with a 2" spacer
5yd. 2in.=in.
Is 74in > 2yd 2in
160/6 ft qube = 26.6666666 qubic ft Put another way, 2in is 1/6 of a foot so 160ft2 x 1/6ft = 26-2/3 ft3.
103.04 ft2
Could be a 1/2in By 1/2in by 1/2in
2in
the length of a swallow is 5 1/2in the width is 14 1/2in