I recently had a abysmal experience with Clera, and would enthusiastically recommend you go somewhere else for your windows & doors. Dealing with Clera included numerous issues, primarily related to install but here's a full list:
1) After taking a deposit, Clera came back to finalize measurements. During this time, they brought up that they only supply one style of trim and tried to charge extra for trim that would match my existing windows. While this eventually went away and we proceeded at no additional cost, I should've known that I'd be dealing with an unprofessional contractor.
2) 2-3 Months delivery turned into 6 months. Don't bother talking to your sales rep, it's a waste of time.
3) While replacing a large window in my home, they managed to damage the existing plaster walls. This wouldn't be a problem except they refused to fix it, stating that "they only install windows & doors".
4) In addition to leaving holes in the wall, they also damaged the trim that they installed; leaving places where compound, sanding and fresh paint are needed just to finish the job. Guess they really mean "only windows & doors".
5) Brand new rear door doesn't open all the way. I acknowledge that my floor isn't level, however some care while taking measurements would have identified this and we could have agreed on a possible solution before the brand new door is ordered, delivered and installed.
6) Other windows had the same damage to brand new installed trim, or new trim wasn't purchased of similar size to existing. They even damaged the dry wall in one spot.
I've attached some photos for examples.
At the end, they leave with a mess and excuses that they clearly verbally told you about of this when you hired them. Except, I don't think I would've hire someone to do half a job.