Assertion: channel letter | /r/CapableOf | decrease to shallow
Facets:
value: as 2–3
type: OTHER
value: from 5–6
type: TEMPORAL
value: in 50–80 mm
type: OTHER
Source sentences:
text: Since the advent of LED lighting technology, channel letters have become thinner in depth, decreasing to as shallow as 2–3 in (50–80 mm) from 5–6 in (130–150 mm), a trend which began in Europe, and is seen increasingly in the United States.