WARNING! BEWARE if you're thinking about purchasing a generator from Norwall. I ordered a whole house generator, but there was hidden damage on the back portion of the lid. I was told by Norwall staff that the box covering could be removed by sliding if off from the top to fully inspect. That was not the case. Instead, a thick wooden crate was attached to the box using industrial staples and nails. If you want to find any concealed damage, Norwall expects you to PRY away the wooden crate using a hammer, heavy screw driver, crow bar, and utility knife, while the delivery carrier waits (about 20 minutes are so). Doesn't matter if the box is ripped up and the wood frame is destroyed. Norwall considers this a reasonable expectation for the customer to inspect the unit. The sales manager was rude and unprofessional. Replacing the lid (around $300) for a $3,800 generator for other companies would be good business practices, not Norwall. So BEWARE! Rip that crate open and inspect! You've been WARNED!