Back to all products Share this page PDF version 3" Square Pinhole Trim For use with MR16 lamps with GU5.3 Bi-Pin, GU10, or PSA37. Jump to Section Overview Resources Catalog Numbers Compatible PRODUCT IMAGE Powder coat paint finish. Square Trim with Round Pinhole 4 5/16" Square. Resources & Downloads Specifications Specifications Other Alpine™ System Presentation Product SKU Catalog Number Finish EL2319C Chrome Reflector/White Ring