IPad Pro 12.9 first generation
i have a ipad 12.9 pro first generation. I would like to know if it will fit a fifth generation or a third generation cover
iPhone 14 Pro Max
No. A cover designed for a third or later generation iPad Pro 12.9” cannot be used with a first generation iPad Pro 12.9”
The first and second generation iPad Pro 12.9” share the same dimensions- but have entirely different chassis and physical dimensions to third through sixth generation iPad Pro 12.9”.
You can directly compare dimensions and other specifications of all iPad models here: