Substitute 9W UV Bulb: G23 2 Pin for HW-303b 304b, 404b Jup-01, CF400uv CF500uv Canister Filters

Substitute 9W UV Bulb: G23 2 Pin for HW-303b 304b, 404b Jup-01, CF400uv CF500uv Canister Filters

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