Reduce operating costs while maintaining peak performance High-capacity cartridges require fewer changes Spin-welded construction with high-purity plastics ensures long service life Available in standard connection and hose nipple configurations Made in the USA! Includes: 1 x VP-17-1050, 1 x VP-17-4203, 1 x VP-17-4010, 1 x VP-17-4011 Equivalent to: D3807 Use these filtration cartridges in your ResinTech, UNIX, Barnstead PCS and Vaponics water purification systems or design a system using wall-mounting...