The Reflect 4' Barndoor Set from BB&S Lighting comes with hinges and mounting plates. The leaves are completely adjustable and work with most grids. They are for use with singles, duals, or quads.
BB&S Lighting BBS-6434 Specs
Item Type
2-Leaf Barndoors
Light Compatibility
Proprietary Mount: For BB&S Lighting Pipeline Reflect 4'