Peterson Manufacturing 2.5 Inch Grommet Kit for 142A and 142R Clearance Lights features a 2.5 inch grommet. It allows 2 1/2 inch diameter sealed units to be flush mounted. It requires a 3 inch mounting hole and 142-49 or 162-49 plug to complete installation. It fits 142, 143, 162 and 163 series lights.