IM-Series plastic tanks from Infiltrator Systems are lightweight, durable, watertight and provide strength in a two-piece design. Available in a variety of sizes including the large-capacity IM-1530, the line enables a wide-range of installation options including shallow, multiple and serial tank configurations. All tanks have integral heavy-duty lids that interconnect with a TW Riser System, structurally reinforced access ports, reinforced structural ribbing and fiberglass support posts to provide additional strength. Inboard lifting lugs make delivery and handling easy. No special installation, backfill or water filling is required. The two-piece design allows for easy shipping and reduces freight costs. They can be installed with 6 to 48 inches of cover, and can be pumped dry. 800/221-4436; www.infiltratorsystems.com.