Reddit reviews Mat Board Center, Pack of 10 3/16" Black Foam Core Backing Boards (11x14, Black)
We found 1 Reddit comments about Mat Board Center, Pack of 10 3/16" Black Foam Core Backing Boards (11x14, Black). Here are the top ones, ranked by their Reddit score.
Pack of 10 11x14 Backing board.This item comes with 10 single backing boardsThe outside size is 11x14 and fits 11x14 Frame. Color: BLACKThickness: 3/16"
Something like this: https://www.amazon.com/Mat-Board-Center-Backing-Boards/dp/B01IIVZ0E8/ref=sr_1_3?ie=UTF8&qid=1519044406&sr=8-3&keywords=3%2F16+foam+board
3/16" thick (~5mm). You can also buy large sheets at places like Hobby Lobby that are around 2'x3' for $6. I used a large retractable razor for most of the cutting and an exacto knife for the windows/doors. It cuts easily.