A repairer shall post a sign twenty-four inches by twenty-six inches in a conspicuous area upon the premises in boldface type, or in such place or places and in such type and size as the Commissioner of Consumer Protection shall require by regulation, which sign shall read as follows:
A CUSTOMER MAY REQUEST…
1.  A WRITTEN ESTIMATE FOR REPAIR WORK.
2.  A DETAILED INVOICE OF WORK DONE AND PARTS SUPPLIED.
3.  RETURN OF REPLACED PARTS, PROVIDED THE REQUEST IS MADE AT THE TIME THE WORK ORDER IS PLACED.
QUESTIONS CONCERNING THE ABOVE SHOULD BE DIRECTED TO THE MANAGER OF THIS REPAIR FACILITY.