Can you do French flaps on a paperback?

What is a French flap? What is the width of the flap?

Yes, we can do French flaps or a gatefold cover. Our French flaps our 3" wide and we can do them with a 10 pt. C1S cover stock.

Our French flaps are not flush, they overhang the interior pages foredge about 1/16" to 1/8".

Don't know what a French flap looks like? Samples below!