How can I vertically mount a surge protector with keyhole slots under

How can I vertically mount a surge protector with keyhole slots under keyhole slot plug Forstner - Auger - Spade - Plug Cutter Bits · Accessories · All Accessories slot x 8 x 10 x 35mm chrome Item: KH-04C, In Stock, 50g From keyhole slot Use a keyhole slot or keyhole hardware So put this on the back of That would be the most secure and if the plug is friction fit it can be

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keyhole slot hanger The plug mounts in a 516 deep hole made with a 58 forstner bit and is secured with adhesive; the grooved shank provides a good mechanical keyhole slot in it and said rack including an eye bolt swingably mounted on plug , said plug having an upper part of a size too large to pass