Available in flat-bottom and total-drain conical bottom, HDLPE tanks are FDA compliant and meet NSF standard 61. Open-top tanks come equipped with a standard lid cover and molded-in gallon/liter graduation indicators. Lids have an all-plastic hinge and incorporate rib design to better support top-fitting installations. Lid assemblies enable access to tank interior without removing entire lid. Conical bottom tanks are designed to withstand weight of 1.9 specific gravity material in tanks. To accommodate floor plumbing and pumps, tank stands have a nominal clearance of 18” from bottom of tank to floor. Tanks do not come with stands, order separately.