This part is a Hot Tub Pillow that is 9 1/2" x 4 1/4" and 6-1/2" between the Tabs it fits a variety of brands some are out of business. It fits some Infinity, Raindance, Serenity, Premier, Serenity, Dimension One and Also Four Winds (Note: The Four Winds Pillows are usually Black but other than color these will work.) It is 4 1/4" Wide at the top and 9 1/2" Long it has 2 snap tabs 6 1/2" between on the back that are designed to snap into cups on the tub. It is Gray in color.
Note: There is a similar version with holding tabs that are 3 3/4" center to center we offer than version in our store..