You don't mention if you have an ADA height toilet or a standard height. The ADA measures 16-1/2" from the floor to top of bowl. The standard height measures 14-5/8" from the floor to top of bowl. That's almost 2" difference. Some wooden seats make be a tad thicker than plastic one, but I know of none that are significantly thicker. As a side note, last summer I had an opportunity to visit FDR's summer white house in Warm Springs, GA. The "house is really just a rustic cabin, but the bathroom really caught my eye. As you probably know, FDR was crippled by polio, so he had special needs. The toilet in the house was a standard toilet (York I think), but it is mounted on a platform made of several marble slabs. This raised the height to enable the President to swing from his wheel chair on to the toilet and back to the chair without bending his braced knees. ADA height 50 years before ADA.