Item Detail Table of Content Installation Kit for 400 Gallon Tank Item Number: RTH315001502 Supplied by ROTH INDUSTRIES INC (see all) ITEM IS DISCONTINUED1-855-298-2687 Description Kit 1500L (Vent Alarm, gauge and 1/2" duplex bushing). Warranty One (1) year Warranty. Product Specification Weight21.1 (9.6)