This listing is for a pair (2 surrounds) of 9" foam surrounds specifically designed for the Smaller Advents with the Masonite trim ring. These are the premium USA made foam surrounds.
Please check your measurements! These measure 8.875" o.d., 8.25" roll o.d., 7" roll i.d. & 6 5/8" i.d. These do not fit the larger Advent woofers used in the OLA & NLA. These are designed for the smaller woofers with a 7" to 7 3/16" cone. For the Advent /2, these can be cut & spliced to fit. Surround needs to be inverted (roll side down) for the Advent /2.