The LEO Hardware Top Jamb Drop Plate is designed for top jamb installations and is compatible with Dorex 441 Series, and LCN 4040 XP Series door closers. Constructed from heavy-duty powder-coated steel, this drop plate ensures durability and long-lasting performance. It includes all necessary fasteners and mounting instructions for easy installation. Ideal for low ceiling conditions, this plate requires a frame header face of at least 1-3/4". For even lower ceiling conditions, consider using the 4000 18 G drop plate.