Allscape makes an extensive range of step lites.
Ruhr University Bochum Botanical Gardens
SP-01/02/03 SP-05
40 INC, 13 CF, 18 CFQ 70MH & HPS, 42 CFT, (2) 13 CF, (2) 26 CFQ
SP-08/11 SP-09/12
100 INC, 100 MH & HPS, (2) 26 CFQ, 100 INC, 100 MH & HPS, (2) 26 CFQ,
42 CFT, (2) 13 CF 42 CFT, (2) 13 CF
SP-10 SP-28
175MH, 150HPS, 26CFQ, 42CFT, 13CF, 18LPS 100MH & HPS, 42 CFT, 13 CF, 26 CFQ
SP31 SP-100/101
175MH, 150HPS, (2) 26CFQ, (2) 42CFT, 25INC, 13CFQ
(2) 13CF, 18LPS
SP-114/115
35 Halogen