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Lightolier 

a Genlyte company 

www.lightolier.com

631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2007 Genlyte Group LLC • F0507

Job Information 

Type:

Job Name: 

Cat. No.: 

Lamp(s): 

Notes:

 

Lytecaster

®

 Recessed Downlighting 

MHM75

Page 1 of 1 

6 3/4” Aperture H.I.D. Metal Halide Lamps (Open Fixture Type) Ballast Assembly 

Features

1.  Ballast Assembly:

  Splice Box is fastened to ballast and #16 ga. ballast 

plate to form one complete assembly locked by retaining screw to mounting 
frame. Complete assembly accessible from below for inspection and 
replacement.

2.  Socket Housing:

  Impact-extruded aluminum; adjustable to accommodate 

different lamps.

3.   Reflector:

  Accepts reflectors shown above. See standard (non HR) 

specification sheets for construction details.

4.   Junction Box:

  4" x 3 1/2" x 2",14 ga steel. Contains plug-in connectors 

for ballast assembly. May be wired-in before ballast assembly is installed. 
Integral cable clamps permit attachment of nonmetallic Romex

®

 or armored 

cable without need for additional connectors..

5.  Mounting Frame:

  #20 ga. electro-galvanized steel, furnished with 13" long 

mounting bars.

6.   Lamps:

  Use open fixture (no glass guard) E and ED metal halide lamps (will 

not accept standard metal halide lamps).

Finish

All painted finishes are baked enamel.

Mechanical

Provided with .054" (#16 ga.) galvanized steel. 13" long bars to 27", rotatable and 
lockable, with integral T-bar tabs.

Electrical 

Porcelain socket medium base heavy duty 4KV pulse rated nickel plated screw 
shell. Pre-wired quick plug-in connector for easy attachment to Junction Box. UL 
listed for max. of (8) No. 12, 70°C through branch circuit conductors (4 in - 4 out), 
or 60°C conductors for end of run. Ballast: Thermally protected, HPF, Dual Tap 
120/277 Volt encased and filled, attached splice box.

Thermally Protected

 – Complies with UL and NEC thermal protection requirements.

Options

 – Auxiliary lighting system for temporary H.I.D. lamp outage and fusing 

(consult factory).

Accessories

Plaster Ring: 

 

1961

Extra Wide Flange Trim Ring: 

1954

Extra Thick Ceiling Ring: 

1967A

Labels

UL (Suitable for Damp Locations), I.B.E.W

1. Frame-in Kit

2. Ballast Assembly

Use MHM assembly for

ED lamps; use MPM 

assembly for PAR38 lamps.

3. Reflector Trim

11 1/8”

9”

6 13/16”

Ceiling Opening

Max. Ceiling Thickness 1”

9”

LAMPS:
70W, 100W ED17 
(Coated)

Max. Ceiling Thickness 1”

7 15/16”

LAMPS:
70W, 
100W ED17 (Coated)  
70W, 100W PAR38

Max. Ceiling Thickness 1 1/2”

10 7/8”

LAMPS:
70W, 100W PAR38

Max. Ceiling Thickness 1 1/4”

7 5/8”

Max. Ceiling Thickness 1”

7 15/16”

LAMPS:
70W, 100W ED17 
(Coated)
70W, 100W PAR38

LAMPS:
70W ED17 (Coated)

Max. Ceiling Thickness 1 1/2”

10 7/8”

LAMPS:
70W, 100W PAR38

Complete Fixture consists of Frame-In Kit, Ballast Assembly, & Reflector Trim. Select each separately.

Frame-In Kit 

Reflector Trim

1102HF

 

1146HR

   Specular Clear

 

1113HR

   Specular Clear

 

1151HR

   Specular Clear

Ballast Assembly

MHM75

(for 70W ED17 coated 
Open Fixture Lamps)

MHM100   

(for 100W ED17 coated
Open Fixture Lamps) 

1105HR

   Matte Black Step Baffle

 

1149HR

   Specular Matte Black 

1126HR

   Matte White Bezel

MPM70

(for 70W PAR38 Lamps)

MPM100

(for 100W PAR38 Lamps)

Romex

®

 is a registered trademark of General Cable Industries Inc.

US Patent Number: 4,313,154; 5,045,985

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