First install done not to code. Cut-out was made for a larger window than the previous one but a proper header to hold the weight of the roof was not installed. When installer returned he wanted my to pay him again for the proper reinstall.
Wrong dimensions installed, not symetrical.
Cheap fiber board used as window sill. Water from window condensation totally destroyed it.
Take much longer than the 6 - 8 weeks that they say to fulfill the order.
Sales agent will not return your call after they get paid.
Do not buy from Clera. They will not correct their mistakes. They will sell
you crappy windows for a high price.