Check the listing for details. InSinkErator FLG-MTBLK Sink Flange for InSinkErator Garbage Disposal-Matte Black. Color: Black, Condition: New. Listed at 22.99 USD. The InSinkErator FLG-MTBLK Sink Flange is a stylish and durable kitchen accessory made of stainless steel in a sleek matte black color. Designed by the trusted brand InSinkErator, this round sink flange has a diameter of 4.5 inches and a height of 1.75 inches. It is specially crafted to fit perfectly into a sink, providing a secure and functional connection for your garbage disposal. This set includes one sink flange, making it a convenient addition to your kitchen for a seamless look and efficient drainage system.The InSinkErator FLG-MTBLK Sink Flange is a stylish and durable kitchen accessory made of stainless steel in a sleek matte black color. Designed by the trusted brand InSinkErator, this round sink flange has a diameter of 4.5 inches and a height of 1.75 inches. It is specially crafted to fit perfectly into a sink, providing a secure and functional connection for your garbage disposal. This set includes one sink flange, making it a convenient addition to your kitchen for a seamless look and efficient drainage system.