That would be a nice feature, but people who add sets to the database first would need to be more attuned to adding the set dimensions. Most of the time, people do not think to do this when the size is other than 2 1/2 x 3 1/2. I've sent in a bunch of "error" notifications asking for the correct dimensions to be added (and they always have been). But plenty remain, so no search for dimensions, even if that were a feature, would be accurate.
I'd be eternally grateful to anyone who can help me find a 1998 Bryan Braves (non-perforated) Kerry Ligtenberg and a 2000 Nabisco Albertson's Astros Chris Truby.
Last missing items in a 10,000-card "set."