Gratings over hatches let air into the ship. Also used over the galley stove to let steam and smoke out. Use either of two assembly methods to make gratings. Interlock the notches of the strips egg-crate fashion. To use half the number of strips, glue them edge to edge.
Dimension is the size of the square holes after assembly. Each strip is 11-3/4" long.
Cherry / 3/32" / 2.5mm / 4 strips per pack