its HVAC metal tape, it will last LONG time... i didnt bother buying more screws, it actually went together fine with the ones i had, jsut shuffled around a bit.. the box cover is really just a diverter, so if it doesnt divert AS much, still heats the car lol

i think all and all it was "easy" to do, wasnt lots of complicated steps, just stupid with the whole requirement to break things.

the tape was used to fix up some broken bits.