The refrigerator exterior exhaust vent on most hilo's use a stamped grill which is very restrictive for air flow and does not have proper waterproofing. After removing the grill and inspecting the area, I had water damage at my lower rail below the grill.
I hand built a louver grill which allows more free area for more air flow and proper waterproofing with the louver design.
Because the the factory installed the wrong size grill for the opening, I had to adjust the size of the flanges to cover the discoloration of the fiberglass and old screw holes.

Attached Images

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Les & Patricia
2006 22ft towlite (replaces 97 21TL)
2006 Toyota tacoma pre-runner 4.0 L V-6 quad cab
w/ 98 chevy Powervision towing mirrors
2017 Chevy Silverado 1500 5.3 v8 (replaces Toyota)
2 Hobie mirage pedal drive kayaks

It's great to be talented. That looks nice and has to be better.

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My Great Wife Joyce
2018 Jayco Jay Flight 21QB
Formerly owned 1705T and 2310H
2012 F150 4X4 SuperCrew EcoBoost w/Leer Cap
Reese WD Strait-Line Hitch
Amateur Radio K3EXU