Product Information Includes: Flapper return springs Material: Aluminum Select a Product Part NumberSealFlange SizeLength 4041RDMetal-to-metal4"9" 3030RD-SSPWhite silicone3"6-7/8" 3031RDMetal-to-metal3"6-7/8" 4040RDWhite EPDM4"9" 4042RDWhite silicone4"9"