Retaining device for fastening an appliance insert in a base panel

A combination comprising a flanged appliance insert, a base panel having an opening therein with a surface surrounding the opening and at least one retaining device for securely fastening the appliance insert in the opening in the base panel with the flange of the appliance insert resting on the surface, said retaining device comprising a retaining clamp having a retaining leg adapted to be fixed in a pre-determined position on an edge of said opening and a resilient clamping leg connected to the retaining leg in a U-shaped manner and forming a space between the legs, said clamping leg having latching teeth that extend toward the retaining leg of the clamp, and a retaining web fixed at one end to and extending downwardly from the appliance insert adjacent to the flange thereof, said retaining web having a latching web formed on an opposite end thereof, whereby when the retaining web on the appliance insert is pressed into the space between the two legs of the retaining clamp, the latching web of the retaining web engages with the latching teeth on the clamping leg of the retaining clamp and anchors the appliance insert in place in the opening in the panel.