Pillow, PDC, Graphite Gray PVC Air Filled With No Logo $118.00 Your year round home sanctuary Replacement spa pillow used in PDC Spas and other brand hot tubs. This air filled pillow without logo measures about 9 1/2"" x 4 3/4"" with a wave design. Pin spacing in back is about 4 1/4"" measured center to center of... Add to Cart