FFS Probe installation kits primarily come in two styles, Suspension and Bottom Mount. The Suspension kits are used to install TSP-LL2-xxx Leak Detection probes in underground storage tank applications using either 2" or 4" riser pipes. Suspension isolates the probe from possible tank deflection and also keeps in it a true vertical orientation for optimal float movement and measurement accuracy. These kits also provide a tight seal to the tank to prevent water intrusion and meet regulatory requirements. The 4” models also provide a quick release cap for easy access to the probe for inspection or maintenance. TSP-LL2-xxx-I Inventory Control probes come with hardware that allows them to be installed on the tank bottom. The Bottom Mount install kits provide the same tight seal and ease of access without the need for the suspension hardware necessary in leak detection applications. Both styles work well on either steel or fiberglass tanks.