Reference for Menachot 191:10

נותן ארכו כנגד רחבו של שולחן כופל טפחיים מכאן וטפחיים מכאן וטפחיים ריוח באמצע כדי שתהא הרוח מנשבת בהם

THE CAKES OF THE SHEWBREAD WERE TEN HANDBREADTHS LONG AND FIVE WIDE. EACH CAKE WAS PLACED LENGTHWISE ACROSS THE BREADTH OF THE TABLE, AND TWO AND A HALF HANDBREADTHS WERE TURNED UP<span class="x" onmousemove="('comment',' And stood perpendicularly; these were the sides of the cakes.');">¹³</span>

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