Riser Safety Pans from TUF-TITE allow a concrete safety plug to be cast in a plastic pan for the riser system. The riser pan can be placed on the inner core to be cast into a tank. It can also be placed anywhere in the riser column or at ground/surface level. Its plastic internal safety lid for child protection can be bolted down, screwed down or filled with concrete for additional safety. Inner safety lids are available to fit 12-, 16-, 20- and 24-inch-diameter risers. They come with all the screws needed, including lid safety screws. Just make sure you replace and attach the internal safety lid and screw the lid to the riser using all the screws and the side safety screws. 800-382-7009; www.tuf-tite.com.