
FEATURES & SPECIFICATIONS
INTENDED USE — The I-BEAM® fluorescent high bay is an ideal one-for-one replacement of common metal
halide high bay systems. Applications include manufacturing, warehousing, commericial facilities and retail. The
fluorescent I-BEAM fixture performs at mounting heights from 15'-40'. Certain airborne contaminants can
diminish integrity of acrylic. Click here for Acrylic Environmental Compatibility table for suitable uses.
CONSTRUCTION — Rugged fixture construction coupled with excellent fixture performance. Channel
is formed of heavy-duty Code-gauge steel to stand up to the most demanding elements. Lamp holder
assembly protects from incidental damage to reflectors during installation. Channel is high-gloss white
baked enamel; five-stage iron phosphate pretreatment ensures superior paint adhesion and rust resistance.
OPTICS — Two optical systems are available. Narrow distribution is ideal for narrow or aisle lighting
applications and features precision-formed segmented optics utilizing Alanod Miro® 4 specular aluminum
reflectors. Provides 95% reflectivity and warranted for 25 years. Wide distribution includes high-reflectance
white finish for general or open areas.
ELECTRICAL — Ballast: MVOLT 120-277V ballast accommodates most electrical requirements. Thermally
protected, resetting, Class P, HPF, A+ sound-rated electronic ballast. AWM TFM or THHN wire used throughout
rated for required temperatures.
Sockets: Sockets include secure positioning rotating collars with enclosed contacts.
INSTALLATION — Suitable for suspension by chain, cable or hook monopointhanger. Access plate on the
back of channel housing allows for quick and easy wiring.
LISTINGS — UL Listed to U.S. and Canadian safety standards.
WARRANTY — 2-year limited warranty. Complete warranty terms located at
www.acuitybrands.com/CustomerResources/Terms_and_conditions.aspx
Actual performance may differ as a result of end-user environment and application.
NOTE: Specifications subject to change without notice.
Catalog
Number
Notes
Type
Contractor Select
Fluorescent High Bays
IBZT5
IBZT8
ORDERING INFORMATION
Standard
Number UPC Description Lamps Wattage Voltage Distribution Type Included Qty. Qty.
IBZT5 4 745977144141 T5 fluorescent high bay 4 54 120-277 Narrow Electronic, program start N 51 1
IBZT5 4L 745977147197 T5 fluorescent high bay 4 54 120-277 Narrow Electronic, program start Y 51 1
IBZT5 4L WD 745977147227 T5 fluorescent high bay 4 54 120-277 Wide Electronic, program start Y 51 1
IBZT5 4 WD 745977147421 T5 fluorescent high bay 4 54 120-277 Wide Electronic, program start N 51 1
IBZT5 4 120/277 MSE3601 745977147258 T5 w/ embedded sensor 4 54 120-277 Narrow Electronic, program start N 51 1
IBZT5 4L 120/277 MSE3601 745977147289 T5 w/ embedded sensor 4 54 120-277 Narrow Electronic, program start Y 51 1
IBZT5 4L WD 120/277 MSE3601 745977147302 T5 w/ embedded sensor 4 54 120-277 Wide Electronic, program start Y 51 1
IBZT5 4 WD 120/277 MSE3601 745977147357 T5 w/ embedded sensor 4 54 120-277 Wide Electronic, program start N 51 1
IBZT5 6 745977147432 T5 fluorescent high bay 6 54 120-277 Narrow Electronic, program start N 36 1
IBZT5 6L 745977147470 T5 fluorescent high bay 6 54 120-277 Narrow Electronic, program start Y 36 1
IBZT5 6L WD 745977147517 T5 fluorescent high bay 6 54 120-277 Wide Elec tronic, program start Y 36 1
IBZT5 6 WD 745977147519 T5 fluorescent high bay 6 54 120-277 Wide Elec tronic, program start N 36 1
IBZT5 6 120/277 MSE3601 745977147623 T5 w/ embedded sensor 6 54 120-277 Narrow Electronic, program start N 36 1
IBZT5 6L 120/277 MSE3601 745977147630 T5 w/ embedded sensor 6 54 120-277 Narrow Electronic, program start Y 36 1
IBZT5 6L WD 120/277 MSE3601 745977147609 T5 w/ embedded sensor 6 54 120-277 Wide Electronic, program start Y 36 1
IBZT5 6 WD 120/277 MSE3601 745977147616 T5 w/ embedded sensor 6 54 120-277 Wide Electronic, program start N 36 1
IBZT8 4 745977147661 T8 fluorescent high bay 4 32 120-277 Narrow Electronic, instant start N 51 1
IBZT8 4L 745977147678 T8 fluorescent high bay 4 32 120-277 Narrow Electronic, instant start Y 51 1
IBZT8 4L WD 745977147692 T8 fluorescent high bay 4 32 120-277 Wide Electronic, instant start Y 51 1
IBZT8 4 WD 745977147708 T8 fluorescent high bay 4 32 120-277 Wide Electronic, instant start N 51 1
IBZT8 4 120/277 MSE3601 745977147715 T8 w/ embedded sensor 4 32 120-277 Narrow Electronic, program start N 51 1
IBZT8 4L 120/277 MSE3601 745977147685 T8 w/ embedded sensor 4 32 120-277 Narrow Electronic, program start Y 51 1
IBZT8 4L WD 120/277 MSE3601 745977147814 T8 w/ embedded sensor 4 32 120-277 Wide Electronic, program start Y 51 1
IBZT8 4 WD 120/277 MSE3601 745977147784 T8 w/ embedded sensor 4 32 120-277 Wide Electronic, program start N 51 1
Catalog # of Ballast Lamp Pallet Carton
IBZT8 6 745977147791 T8 fluorescent high bay 6 32 120-277 Narrow Electronic, instant start N 36 1
IBZT8 6L 745977147807 T8 fluorescent high bay 6 32 120-277 Narrow Electronic, instant start Y 36 1
IBZT8 6L WD 745977147845 T8 fluorescent high bay 6 32 120-277 Wide Electronic, instant start Y 36 1
IBZT8 6 WD 745977147869 T8 fluorescent high bay 6 32 120-277 Wide Electronic, instant start N 36 1
IBZT8 6 120/277 MSE3601 745977147000 T8 w/ embedded sensor 6 32 120-277 Narrow Electronic, program start N 36 1
IBZT8 6L 120/277 MSE3601 745977148040 T8 w/ embedded sensor 6 32 120-277 Narrow Electronic, program start Y 36 1
IBZT8 6L WD 120/277 MSE3601 745977148088 T8 w/ embedded sensor 6 32 120-277 Wide Electronic, program start Y 36 1
IBZT8 6 WD 120/277 MSE3601 745977148170 T8 w/ embedded sensor 6 32 120-277 Wide Electronic, program start N 36 1
CONTRACTOR SELECT / INDUSTRIAL INDUSTRIAL_FLUORESCENT_HIGH_BAYS

Industrial Fluorescent
Accessories: Order as separate catalog num ber.
DLIBZ14 ACL Door frame kit with .125" acrylic lens for four-lamp fixture
DLIBZ19 ACL Door frame kit with .125" acrylic lens for six-lamp fixture
DLIBZ24 ACL Door frame kit with .125" acrylic lens for four-lamp, 24" wide fixture
HBBS36 Chain hanger, 36"
IBHMP Hook monopoint
IBZACVH 10' adjustable aircraft cable with V-hook
IBZPMP Pendant monopoint splice box, includes side covers
IBZPMPHB Pendant monopoint splice box, includes side covers (3/4" hub)
IBZTFC Tandem coupler and side panel
WGIBZ14 Wireguard for four-lamp fixture
WGIBZ19 Wireguard for six-lamp fixture
WGIBZ24 Wireguard for four-lamp, 24" wide fixture
Notes
1 MSE360 not compatible with door and lens.
T5 Specifications
4-lamp 6-lamp
Length: 48-1/8(122.2) 48-1/8 (122.2)
Width: 13-1/4 (33.7) 18-1/8 (46.0)
Depth: 2-3/8 (6.0) 2-3/8 (6.0)
Weight: 15 lbs. (6.8 kg) 19 lbs. (8.6 kg)
T8 Specifications
4-lamp 6-lamp
Length: 48-1/8 (122.2) 48-1/8 (122.2)
Width: 13-1/4 (33.7) 18-1/8 (46.0)
Depth: 2-3/8 (6.0) 2-3/8 (6.0)
Weight: 15 lbs. (6.8 kg) 19 lbs. (8.6 kg)
INDUSTRIAL_FLUORESCENT_HIGH_BAYS
CONTRACTOR SELECT / INDUSTRAL: One Lithonia Way Conyers, GA 30012 Phone: 800.315.4963 Fax: 770-981-8191 www.lithonia.com © 2009-2015 Acuity Brands Lighting, Inc. All rights reserved. Rev. 07/09/15