CLAMP/Size: 3, depth: 1.5, aluminum, chromic-anodized finish. 123-3232-FB123-3232-FB Square and Rectangular Clamp | 3 x 3in, 1.5in Depth, Chromic-Anodized FinishMSP avionics clamps eliminate the need for panel removal when repairing or replacing an instrument such as an altimeter or artificial hori..