Hey LI, NYers..and also those in our type climate in general.. I have (BulletBob knows) a farm ranch type house on a slab. I'm looking for a supplier of good/great quality (prehung) fire doors AND insulated doors for a boiler closet and the walk door entry into the garage. Both openings are 36" and I'd like the doors NOT to have a pre-drilled hole for a deadbolt. I'm just not sure about Depot and Lowes, and need your opinions. Thanks a lot!!