Spec Sheet Item Codes: DDDBD0808 8″ x 8″ Access Door for 1″/1 1/2″ Ductboard (#36066 – 10/Box) DDDBD1010 10″ x 10″ Access Door for 1″/1 1/2″ Ductboard (#36067 – 10/Box) Insulated square doors for Duct Board. Available in even sizes 8″ thru 18″. 36066 DBD8”x8” 7 7/8” x 7 7/8” 36067 DBD10”x10” 9 7/8” x 9 7/8”
