XERO DI Cartridge - 21 Inch Contents:Empty and it eliminates bouncing when

and it eliminates bouncing when you walk

They must also have a back vent cap in order for the system to work properly and not collapse while in use

tested by real life technicians working on actual houses

3" wear pad

Get that extra height and reach by working on top of the roof or your ladder

XERO DI Cartridge - 21 Inch Contents:Empty and it eliminates bouncing whenAbout the XERO DI Cartridge 21 Inch With the XERO DI Cartridge, you have the choice to select either a pre loaded or empty cartridge. The pre loaded option provides you with quality virgin resin and a cartridge that is ready for use once you take it out of the box! Install it in your XERO Pure, Wash iT systems, or XERO DI System and you are ready to rock! Once your TDS starts reading above 10 ppm, change out your resin by refilling the cartridge. The