The generator is still working great but as the side of the yard it’s in has become more polished (trees/undergrowth removed, grass planted, sidewalk added, trailer moved) the generator has started to stand out more. To help it blend back in I created some louvered panels to cover it. The louver design allows for plenty of ventilation from all sides. The panels consist of 1×4 slats secured into 1×4 ends with angled grooves cut via dado stack. The panels corners are joined together at 4×4 posts. The rear panel has a cutout for refueling, the top has a cutout for the exhaust flap (with flashing for heat protection) and half of the front folds down for control panel access.
I also made a similar but much smaller cover to go over the top of the plastic service dome for our underground propane tank.