The 51CAD-E24-E22L is a sealed 1/2" (12.5 mm) square potentiometer control manufactured by Bourns, designed for professional audio and general control applications. It features a conductive plastic element with linear taper and ±10% tolerance, offering a resistance range of 1 kO to 1 megohm with an independent linearity of ±5%. The potentiometer is sealed for board washing, includes a metal bushing and shaft, and is available in both PC board pin and bushing mount configurations with optional anti-rotation lugs and brackets. Its compact form factor, gangable design, and sealed construction make it ideal for audio equipment, mixing consoles, and other professional control applications requiring reliable, sealed operation.