INSTRUCTIONS TO MAKE RECTANGULAR MASKS
turn the mask inside out once it's sewn together, and so that you can insert a filter if you're using one. 4. Inside (back) shown with the two 4"x9" parts sewn together . 5. Sew together the front to the back. Sew along ALL sides. Remember you will be able to turn the mask right-side-out through the "gap" The front is shown here in a peach ...