Recessed, Heavy-Duty

Suitable for use in contamination-controlled environments ISO5 (Class 100) and ISO6 (Class 1,000) applications, such as electronic assembly, pharmaceutical processing, semiconductor manufacturing, chemical labs, food-processing areas and the medical industry. Certain airborne contaminants can diminish integrity of acrylic. Refer to Acrylic Environmental Compatibility tables for suitable uses.


Completely sealed, one-piece housing is fabricated from 20-gauge cold-rolled steel. Seams sealed with silicone caulk.

Full door frame is one-piece, 18-gauge CRS featuring triple closed-cell, cross-linked neoprene gasketing between the door, lens and housing. Optional four-piece inset door also available for grid mounted fixtures.

Full 2'x4' door frame secured to housing by 10 stainless steel captive screws, inset door features four screws.

Optional stainless steel and aluminum housings and door frames available.

Metal parts finished with electrostatically deposited, thermally set polyester powder paint after fabrication.


Meets requirements for hosedowns up to 200 psi (see options).

Suitable for use in 1", 1-1/2" and 2" wide T-grids, or with overlapping flange and swing-out hangers for use in dry or plaster ceilings. Consult factory for other grid types.

Product overview and specifications
Brand Name Lithonia Lighting
Color White
Environment Indoor
Finish Gloss
Light Source Fluorescent
Listings CSA
Mounting Type Recessed
Product Type Troffer
Series 2SRH, SRH
Voltage Rating 120, 277, 347, MVOLT
Spec Sheets
A summary of the performance and other technical characteristics of the product.
File Type Document Title View
SRH-2x2-1x2_F_pdf View
SRH-2x4-1x4_F_pdf View
Technical Files
Installation documents, building information models, etc.
File Type Document Title View
Acrylic-Polycarbonate-Compatibility_pdf View
File Type Document Title View
Download brochures, sell sheets, photometry files and other sales tools.