Hello, the fireplace heater is already assemble. You will only have to apply the logs or crystals (if any) inside of the unit. Please don't hesitate to contact Twin-Star customer service at 1-866-661-1218 if you experience any issues. Thank you.
If you are placing this item in a wall, The tv needs to be 3ft above the item, If this item is in a tv stand, You can place a tv on the top of the tv stand. if you have additional questions please feel free to give our Customer Service Team a call 866-661-1218
The trim Kit is to be purchased separately and is your choice of use. Due to the fireplace being a 42 inch you will need a 42 inch trim kit.
Please allow 6-8 inches from the back vents and 3 inches from the top vent.
Hello the insert you are currently looking at would be Width:42.83" Depth:8" Height:17.64" we do not have any that would fit correctly
This unit can be placed inside furniture ( we have mantels that this can be placed in) and it can be built into the wall.