Filter Filters Dual Remove All Filters Price $500 and above (3) Condition New (3) Size 15" (3) Harmony HA-R154 Sealed 15" Loaded Sub Box w/ Kicker 46CXA12001 Amp & Install Kit $545.99 Harmony HA-R154 Vented 15" Loaded Sub Box w/ Kicker 46CXA12001 Amp & Install Kit $543.99 Harmony HA-R154 Rear Fire 15" Loaded Sub Box w/ Kicker CXA12001 Amp & Wire Kit $525.99