WW Graingers have fire damper inspection doors of all sizes, they are hinged and waterproof, then get a piece of 3/16 diamond plate Aluminum
and replace that with a rear window
Re: Fiber door
Member #: 62417
Registered: 10/5/2008
Posted:
1460
Occupation:
Semi-Retired
Location:
Where ever the lights turn off at Night
Personal:
mid 70s
Experience:
~53 years
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