I have an older 20 yerrs +/- fireplace insert. The only information I have on the insert is the name Meredith cast onto the lower ash door. Someone in one of these forums said it may have been made by Penn Steel Works. If you have any information users manual or parts availability please contact me. If not can you point me in the right direction to research parts and instructions or a manual for this insert? I am trying to find out if it has been certified and cant identify the manufacturer or where it was sold.