8n pan seat size

[pete landon]

I have an 8n and would like to order a seat cousion for it but all the ones I see are 19 or 21 inch.Now the only way I can get 21 inch is to measure catty corner other wise it s 17 inches side to side or top to bottom.Which is the right measurement?
Thanks

 

[L.B,]

I don't know the seat measurements but our host sells them, they have a draw string to secure them.

 

[R Geiger]

Both of my 8n's measure just shy of 19 inches side to side.