What size Cove Ceiling is possible? We get asked regularly what sizes of Cove Ceiling Panels do you offer, so we started a collection. Currently we offer Curve Radius as small as 1" and as large as 24" in a single Panel. We can go much larger with a 2 panel construction. The picture below shows a range of panels from 1" to 14" Radius as a comparison. Single story rooms of ceilings of 10 ft or less, typically call for a curve radius between 4" and 8". Larger Rooms or Ceiling Heights higher than 10 ft often specify Curve Radius from 12" to 24". We can offer a wide range of solutions for your Curved Drywall Project. These Panels screw in place on the existing framing and finish like the rest of the drywall.