A user replaceable cover for attachment to and detachment from an apparatus including a first lateral part extending in a first direction, a second lateral part disposed opposite the first lateral part and extending in the first direction, a posterior part extending substantially in a second direction orthogonal to the first direction and joining the first lateral part and the second lateral part and an upper part having extremities and joining at the extremities the first lateral part, the second lateral part and the posterior part, wherein each of the first lateral part, the second lateral part, the posterior part and the upper part has an interior surface and an exterior surface, the user replaceable cover further including a plurality of sidewalls defined by the first lateral part, the second lateral part and the posterior part, wherein the sidewalls terminate at a lower edge for abutment with the apparatus; a face defined by the exterior surface of the upper part; an anterior edge defined at where the first lateral part, the second lateral part and the upper part terminate for abutment with the apparatus; a first posterior tenon extending from the interior surface of the posterior part; a second posterior tenon extending from the interior surface of the posterior part; and an anterior tenon extending from the anterior edge of the first lateral part.