With the new vents the spacer ring was not required. The spacer ring was made to fill in the gap between the hatch and the trim ring. It was not used to keep water out or any other reason than to fill the gap. What most people found out was that if you flip the trim ring upside down and slide it up with the flat part towards the hatch the spacer ring was not needed. Due to lack of sales and solution of flipping the trim ring. The spacer ring has been discontinued.