Jandy SFSM140 SFSM 37" SFSM Side Mount Vertical Sand Filter with Unions. Get clearer, cleaner water with a filter that’s durable and easy to maintain. Our Side-Mount Sand Filters are designed for simple installation and replacement of existing residential filters. Available in four sizes ranging from 24 inches to 37 inches, including a 35 ½-inch model that easily fits through a standard 36-inch doorway for indoor pool pads, these sand pool filters come equipped with industry-standard internal plumbing and plumbing connections making them an ideal choice for filter exchanges and upgrades. A proprietary lid design allows for easy handling and access with more uniform pressure across the lid and efficient lateral and diffuser construction help maximize flow with limited pressure drop.