Made these both on one warp my first attempt at this. I didn’t leave enough between the two so toeing the fringe was very hard.
7.5 heddle
108 ends which left 17 slots on one side empty & 18 on the other.
Warp pattern:
24 grey, 18 white, 24 grey, 18 white, 24 grey.
Weft pattern:
1st placemat
20 grey, 10 white, 33 grey, 10 white, 20 grey
2nd placemat
15 grey, 25 white, 15 grey, 25 white, 15 grey,9 white, 4 grey.

Both 47cm before washing, after 37.5cm x 31.5