Available Individually with No-Order Minimum.A Master carton of this product includes 12 Pcs. Allows 2" diameter sealed units to be flush mounted. Requires 2 5/16" mounting hole and 142-49 or 162-49 plug to complete installation. Kit includes 146-18 grommet, 142-49 plug, and grounding screw. Fits 145, 146, 164, 165, and 166 series lights. Closed back unit recommended for open installation where splash plate is not used.Item is in a sealed barcoded and labeled Poly Bag, Perfect for Parts Bins and Jobbers.Part of the Peterson 146-18 series.