Section 470.403 - Size of Cells(A) Each single occupancy cell constructed after the effective date of 105 CMR 470.000 shall contain a minimum of 48 square feet of floor area. (60 square feet recommended) In double occupancy cells there shall be a minimum of 80 square feet. Floor to ceiling height shall be at least seven and one half feet. No cell shall be constructed to serve more than two occupants.(B) Each holding cell constructed after the effective date of 105 CMR 470.000 shall contain at least 70 square feet with a floor to ceiling height of at least seven and one half feet. There shall be 30 square feet of floor space for each additional occupant beyond two.