Need product info on caning dining room chair backs cane is inside wood frame no spline looks glued perhaps?

Yes. Scrape it out. They sell a special tool. I haven’t done that, but watched it on YouTube

I need to cover 16"×24" of 2 equal opening how many peices do i need to order???

My stool seat top shows 21”x11” of caning but you’ll need an extra 1” on each side. My oder was 24”x12”, which made it a bit of a stretch.

ASIN	B07RGJW9Z1
Best Sellers Rank	#300,743 in Health & Household ( See Top 100 in Health & Household ) #701 in Walking Canes
Customer Reviews	4.0 4.0 out of 5 stars (42)
Date First Available	May 6, 2019
Item model number	S-324
Manufacturer	UNIQANTIQ HARDWARE SUPPLY