Oct 22, · mmon drywall sheet sizes are 4' x 8', 4' x 10', and 4' x 12'. Standard drywall thicknesses are 1/2" or 5/8". Thinner 1/4" and 3/8" panels are used for repairs or curved walls. High-end drywall sheets are high-impact, soundproof, or fire-resistant. Sheetrock st. Sheetrock sts $12 to $20 per panel, depending on the type and thickness.