Trojan (602810-102) KIT,LAMP SLEEVE UVMAX C/D, C4/D4, D PLUS/ D4 PLUS Additional Details ------------------------------ Bullet point: Compatible Models: The VIQUA 602732 quartz sleeve and VIQUA lamp 602805 are for use in the VIQUA D4, D4+, D4 Premium D4-V, IHS12-D4, IHS22-D4, and the discontinued C, C4, C4-V UV systems. The sleeve/lamp combo comes with the necessary O-rings for installation.