View Source OpenRtbEcto.V2.BidRequest.Format (OpenRtbEcto v0.6.5)
This object represents an allowed size (i.e., height and width combination) or Flex Ad parameters for a banner impression. These are typically used in an array where multiple sizes are permitted. It is recommended that either the w/h pair or the wratio/hratio/wmin set (i.e., for Flex Ads) be specified.