A sheet molding compound used for the preparation of enclosures comprising a base resin in a range from 20.0 to 28.0% by weight; a thermoplastic resin in a range from 3.0 to 7.0% by weight; a styrene monomer in a range from 0.01 to 2.5% by weight; a first catalyst in a range from 0.1 to 0.7% by weight; a second catalyst in a range from 0.01 to 0.3 % by weight; a catalyst modifier in a range from 0.01 to 0.25% by weight; an inhibitor in a range from 0.01 to 0.25% by weight; a UV absorber in a range from 0.01 to 0.25% by weight; a wetting agent in a range from 0.1 to 1.00% by weight; a zinc stearate in a range from 1.0 to 2.0% by weight; optionally, at least one pigment in a range from 1.0 to 8.0% by weight; a flame retardant in a range from 30.0 to 73.0% by weight; a thickener in a range from 0.1 to 1.0% by weight; a glass fiber in a range from 10.0 to 30.0% by weight; and a thermoplastic powder in a range of 0.1 to 2.5% by weight.