J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Replacement Portlights

I forget the thickness, but it is the same as the companionway slides. I bought a 4x4 foot sheet, and had enough for the 4 windows and a new top companionway slide. I might have had enough for the bottom slide as well, but I screwed up one of the windows and had to make 5.