FlexibleImageFileMediaType.cs

[ContentType(
		DisplayName = "Flexible Image",
		GUID = "[YOUR GUID HERE]")]
	public class FlexibleImageFileMediaType : ImagePlaceholderMediaType
	{
		[Display(Name = "Height")]
		[Range(10, 1000)]
		[Required]
		public override int Height { get; set; }

		[Display(Name = "Width")]
		[Range(10, 1000)]
		[Required]
		public override int Width { get; set; }
	}