What does No.07 (380/12) mean?

It is the manufacturer's netting specification: No.07 is the line, and 380/12 describes the mesh and twine build. Ask the seller for the exact mesh size and twine denier before ordering if your net design depends on them.

Is knotless netting better than knotted?

For fishing gear, usually yes. Knotless mesh has no knots to snag, chafe or add drag, so it moves through water more easily and weighs less. Knotted netting is often cheaper and easier to repair by hand.

What is double selvage?

It means the top and bottom edges of the netting are finished with a reinforced border, which strengthens the edges where a net takes the most strain. The side edges are not described as selvaged.

How much netting comes in a bale?

Each bale is approximately 100 lbs of netting, and it is sold by the bale only. The listing does not state the length or depth of netting per bale, so confirm that with the seller.