Hello Well, it just seems when picking up an older used pellet stove there are missing parts sometimes. Screws are the most notorious for going AWOL! This stove like the last stove, the back panel was not on it and in both cases I felt lucky to atleast get the back panel but of course NO Screws! Especially since the Eyelet cutout allows for easy removal of the back panel just by loosening the screws a little. No need to remove them and loose them is there? Oh well, it is all part of getting a good deal and learning more about the hardware! Eviro has T-20 Torz screws where we can easily buy a tool with a T-20 Torx head around here, but I tried to buy the screws and let me tell you. It just is not happening! So I did the tread check in those store displays and found the threads to be 8-32 and the length is approx 3/8" long. So I found some very nice round head stainless steel screws that look great and fit perfectly! So I bought a bunch and I am adding the missing ones and replacing other ones. Especially the side service doors. Why go looking for a Torx screw driver just for that! I got 12 Stainless Steel 8-32 Screws with Phillips head 3/8" long for $2.75 at the local Ace is the Place Hardware Store! See pics below What do you guys think? Any Enviro owners do this?