Does this look like the correct way to install a Harman Accentra 52i with a ZC box?

[random-stranger-404]

Hey everyone, I just had a Harman Accentra 52i (with the ZC box) installed by someone, and I’m looking for some feedback on the install.

There is a gap of approximately 1.5 inches between the bottom edge of the insert frame/shroud and the hearth floor. It doesn't look right to me, but I wanted to check if this is a standard clearance requirement for the ZC box or if the unit was simply set too high during the framing/install.

Specifics:

• Model: Harman Accentra 52i-TC Pellet Insert
• Housing: ZC (Zero Clearance) Box
• The Issue: 1.5" gap between hearth and bottom of the frame.

I've attached a few photos showing the gap and how it sits relative to the floor. Does this look "to spec" for those of you with this model, or should I be asking the contractor to come back and drop the unit/adjust the trim?

Thanks in advance for the help!