This is the flag of the Veterans Exempt, which was a New York militia unit located in Plattsburgh. The unit was made up of prominent members of the community and politicians. They participated in the Battle of Plattsburgh, and some other small engagements.
The flag is 3'x5' and made from a premium 100 denier polyester. It has a white header with two grommets. There are four rows of stitches on the fly and two rows on the top, bottom, and header side. The image is screen printed and appears on both sides.
3'x5' flags are 3 feet x 5 feet, 36 inches by 60 inches, 91 cm by 152 cm, 1 yard by 1.7 yards. This is the most common size flag you see hanging on porches, small flag poles, hanging at festivals, and inside of bars and restaurants.