In size, the LJ45 and LJ45XR fit between the smaller Learjet 31 and Learjet 40, at the low end, and the larger Learjet 60 at the top of the Learjet product line.
LJ45 ve LJ45XR boyut olarak Learjet 31 ve Learjet 40'tan daha büyük; Learjet 60'tan küçüktür.