Subaru 1993-2007 Impreza Rear Door Speaker Adapter Spacer Rings - SAK040_475-1 Pair 1/4" thick adapters assure no clearance problems Utilizes existing vehicle mounting points, and requires no cutting or drilling Manufactured with 4 3/4" round cutouts to house most 5 1/4'' aftermarket speakers Also availabe in 2, 4, and 8 pair packs at significantly discounted price - See our other items