General 00910 4-Pin G24q/GX24q to Medium Screw Adapter

*MUST be installed by a licensed Electrician **Ballast MUST be removed, prior to using No index marks so it will fit into any G24q or GX24q socket (exception is GX24q-5 and GX24q-6, must break off 2 center half circle protrusions before inserting LH0910), to medium base adapter Allows an E27/E26 medium base lamp to be used in any G24q or GX24q socket (exception is GX24q-5 and GX24q-6, must break off 2 center half circle protrusions before inserting LH0910).