OVERALL FRONT TO BACK DIMENSONS INCLUDING TERMINAL COVER IS 30.5”. THE TERMINAL COVER IS 4.5” TALL SO 1.5” MORE THAN THE 3” PLATEN THICKNESS. 25.5” X 25.5” X 1.5” INSULATION INCLUDED (WHICH FITS WITH THE 1.5” DIFFERENCE IN THE TERMINAL COVER). SIX STRIP HEATERS (1000 WATTS; 220 VOLTS). CORED FOR OPTIONAL COOLING (APPROX 0.5” PIPE INLET AND OUTLET ON BACK SIDE). SOME DRILLED AND TAPPED HOLES AND SOME THRU-HOLES ALONG EDGES. QTY 2. ITEM #2312.