Restore like-new performance to your fixture with this thermostatic cartridge — 15740 1/2 Thermostatic Cartridge. For your fixture. Designed as an OEM-style replacement for your fixture's original manufacturer, it's precision-engineered for an exact fit and long service life, installing cleanly with no modifications to bring back smooth, reliable operation. Altmans 1/2 Thermostatic cartridge 3 5-8 inch 24pt