No enlarger, it's a super slow paper. I have a bright LED bulb on the ceiling above the enlarger, I connect it to the enlarger timer. It gives me exposures between 30 seconds and a minute, which gives lots of time for dodging and burning.
I just made some different masks out of mount board for 8x10 and 5x7, they sit on top of the contact printing frame and mask out the edges of the paper.