<PackageReference Include="System.Drawing.Common" Version="11.0.0-preview.2.26159.112" />

System.Drawing.Printing.PaperSize

public class PaperSize
Specifies the size of a piece of paper.
namespace System.Drawing.Printing { public class PaperSize { public int Height { get; set; } public PaperKind Kind { get; } public string PaperName { get; set; } public int RawKind { get; set; } public int Width { get; set; } public PaperSize(); public PaperSize(string name, int width, int height); } }