Available Individually with No-Order Minimum.A Master carton of this product includes 12 Pcs. Allows 2 1/2" diameter sealed units to be recess mounted. Requires 2 25/32" mounting hole and 142-49 or 162-49 plug to complete installation. Kit contains 143-18 grommet, 142-49 plug, and grounding screw. Fits 142, 143, 162, and 163 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 143-18 & 144-18 series.