Well designed seating has a slope into the chair so that the front of the seat is about 1/2” higher than the back. Without any slope, the sitter may feel like they are sliding off of the chair. We do not adjust this measurement.
Based on our thirty five years of designing and building chairs we have found that 1/2” or less difference between seat heights is not meaningful, which may be observed while measuring the thousands of differing chairs in our world.
Here is a more detailed breakdown of our height measurements:
- If the seat is wood, then this height is 17-11/16” +-1/8”, measured to the top edge of the front corner of the seat.
- If the seat is a cushion then the floor to top of cushion measurement is 18-1/4” +-1/8”, measured to the absolute top of the cushion at the front. Do not measure the waterfall or round over edge. Sight directly across the top plane of the seat. The cushion will compress at a differential rate depending on the size and weight of the person, and compresses further into the webbing.
- Felt feet add an additional 3/8” the the seat height.
- Plastic Glides add an additional 1/4” to the seat height.