Yes, it would be great for that but I would cover it with a vapor barrier when done.
While Knauf Insulation does offer some products capable of being used up to 1000oF using Ecose Technology, those products are specifically designed for high temperature applications. EcoBatt and EcoRoll products are rated for use up to 350oF. Before using any insulation product from any manufacturer for high temperature applications be sure that they are designed and rated for those applications
no, walls are usually 2x4 or 2x6 thick unless you have a unusual thick wall
15 bundles. buy the bulk price it comes out cheaper you might be able to use it somewhere else. bulk price comes out great deal you can pay similar amount and get extra material.
yep if you have space. you can do r-19 but this is better
approx 30inch give /take hieght only 16" should fit anywhere