
HALO
5 1/2"
(140mm)
3 3/4"
     (95mm)
7 3/8"
(187mm)
5"
(125mm)
BAFFLE
BARN DOORS
AVAILABLE
50 PAR20
50W R20
100W BR25
75W PAR30
BAFFLE
BARN DOORS
AVAILABLE
75W BR30
75W R30
BAFFLE
BARN DOORS
AVAILABLE
300W R40
250W PAR38
BAFFLE
BARN DOORS
AVAILABLE
ACCEPTS COLOR 
FILTERS
ACCEPTS OPTICAL 
LENSES
75W MAX 
12V MR16
INTEGRAL
ELECTRONIC
TRANSFORMER
12V
INTEGRAL
MAGNETIC
TRANSFORMER
12V
ACCEPTS COLOR 
FILTERS
ACCEPTS OPTICAL 
LENSES
75W MAX 
12V MR16
Halo Single and 2-Circuit
L650, L651, L652, L653 
L641, L642, L643 
L611, L612, L613 
L1631, L1632
Halo “LA” Architectural
LA1L Converter required 
for use with Halo “LA” 
Linear Architectural Track: 
LA631, LA632, LA633
Lazer Track
LZR102, LZR104, 
LZR106, LZR108
Halo 4-Circuit 
L963 Converter required for
use with Halo 4-Circuit: 
L621, L622, L623
L650, L651, L652, L653 
L641, L642, L643 
L611, L612, L613 
L1631, L1632
LZR102, LZR104, 
LZR106, LZR108
Halo Single and 2-Circuit
Lazer Track
TRACK LIGHTING Roundbacks
®
L1540 Roundback Cylinder with Black Baffle
Finish: White (P), Black (MB) 
Lamp: 50W PAR20, 50W R20, 100W BR25 (Halo Z10) 
Accessories: L1962 Barn Doors 
MB
(Allows use of L200 Filters/Louvers)
P
L1542 Roundback Cylinder with Black Baffle
Finish: White (P), Black (MB) 
Lamp: 75W BR30, 75W R30,75W PAR30 
Accessories: L1963 Barn Doors
MB
P
L1543 Roundback Cylinder with Black Baffle
Finish: White (P), Black (MB) 
Lamp: 300W R40, 250W PAR38 
Accessories: L1964 Barn Doors 
MB
(allows use of L300 filters or L277 Louver)
     5 3/4"
(146mm)
Max. Extension:
6 3/4” (171mm)
7 3/8"
(187mm)
Max. Extension:
8 5/8” (219mm)
9 1/8"
(232mm)
Max. Extension:
10 1/2” [267mm]
3 3/4"
     (95mm)
5"
       (127mm)
5 7/8"
     (149mm)
P
L2740 Low Voltage Roundback Cylinder 
with Integral Electronic 12V Transformer
Notes: Not for use on Four Circuit Trac
Finish: White (P), Black (MB) 
Lamp: 75W 12V MR16
MB
Accessories: L100 Color Filters/Lenses    L1955 Concentrator 
L1962 Barn Doors L275 Louver (requires Barn Doors)
P
L1742 Classic Low Voltage Roundback Cylinder with
Integral Magnetic 12V Transformer
Finish: White (P), Black (MB) 
Lamp: 75W 12V MR16
MB
Accessories: L100 Series Color Filters/Lenses,  L1963 Barn Doors
P
Lampholder/Track Compatibility Lampholder/Track Compatibility
L1540 
L1542 
L1543 
l1742
L2740
Max.
Extension:
9” (229mm)
Max. Extension:
8 3/4” (222mm)
292
COOPER LIGHTING