Unwieldy

(무거워서) 다루기 힘든, 부피가 큰, 너무 뚱뚱한;꼴 사나운, 거대한;비실제적인

Firefighter/paramedics commented that they had sometimes
used a slide board device that could deal with these
last two issues when transferring a patient in a nursing
home or a hospital, but that the device they were familiar
with was too large and unwieldy for use outside of those
institutional settings where storage was not an issue.