Abstract: A light therapy device mounting kit may include a first spacer comprising a first flat base, a first leg protruding away from the first flat base, and a second leg spaced from the first leg, wherein the second leg also protrudes away from the first flat base. In some embodiments, each of the first leg and the second leg is configured to slideably engage a cavity located within a light therapy device. Each leg may be configured to slideably engage one cavity located in two different light therapy devices. The light therapy device mounting kit may include vertical spacer(s) comprising two legs, horizontal spacer(s) comprising two legs, and square spacer(s) comprising four legs.