Yes but you installed a non approved accessory in it which it clearly says you cannot do. And the instructions for installing your insert says "the factory-built zero clearance fireplace is listed" And as soon as you took the grate and damper out and put the insert in you voided the listing on the fireplace so you are no longer conforming to either set of instructions. Believe me the manufacturers have covered them selves from the liability point of view so if anything goes wrong it is all on the homeowner and or installer.My read of that is that it's pertaining to parts during the installation of the heatilator ("...will result in a safe installation [of the heatilator]"). That could be interpreted differently though I guess. All the originals parts are still there. Anyway, didn't mean to hijack the post.