I ordered this fireplace on 11/28/2018, it came damaged and Wayfair was nice enough to reimburse some money. We bought a cover and have only utilized about 12 times.  We have even sprayed with Fire proofing spray to help with outside dampness.  The back inside is falling apart and coming off, the insulation is visible. Wayfair referred me to Sunjoy Group in Canada.  They state Wayfair has an agreement they are to stand by any items sold. Wayfair is amazing to deal with but, I do take objection to such a faulty product,  To pay this much and for it to be rendered useless in this short amount of time!!
I even have this on my concrete patio, covered, etc.