The Acudor RD-5090 is designed to provide convenient, economical access into round ducts. The pull and catch lock system, along with the gasketing on the door, assures a tight seal without obstruction in the air system. The steel's continuous piano hinge provides for easy installation.
RD-5090 Duct Door Access Door Specifications
Please refer to the product data sheet for more information on duct opening sizes.