HI Leah,
Thanks for your question.
The Logic Vogue is a hearth-mounted fire and not typically designed for hole-in-wall installations without a hearth.
The manufacturer's installation instructions do advise that "If the appliance is greater than 50mm above the floor, then
no hearth is required, although due consideration should be given to how the heat may affect the floor material".
Your fitter would also need to ensure that the fire is satisfactorily supported if no hearth is to be used.
For balanced flue hole-in-wall (4-sided frame) designs, we would suggest looking through our Direct Fireplaces website as per the link below:
https://www.direct-fireplaces.com/gas-fires/hole-in-the-wall-balanced-flue-gas-fires.html?product_list_dir=asc&product_list_order=price
Let us know if we can advise further