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The Juno Aculux IC43 is an architectural-grade, 3-1/4 inch low-voltage MR16 recessed downlight housing designed by Acuity Brands for new construction applications. Engineered as an Insulation Contact (IC) and Air-Loc® rated fixture, it is fully approved for direct contact with building insulation while preventing conditioned air loss through the ceiling plenum.

Core Mechanism & Optics

Acu-Aim™ Precision Geared Hot-Aiming: Offers 370° horizontal rotation and 45° vertical tilt adjustments using a standard screwdriver. This mechanism optimizes the center beam optics, translating the lamp forward during angling to minimize aperture brightness and maximize light output.
Visual Cutoff: Features a deep 50° visual cutoff to the lamp and lamp image, dramatically reducing high-angle glare.
Shielding: Equipped with a matte black aiming mechanism shield to eliminate internal visibility through the trim, preserving a completely dark aperture.

Electrical & Transformer Specifications

Lamp Type & Socket: Utilizes a Bi-Pin socket configured for one 50W max MR16 halogen or compatible LED lamp.
Transformer Options: Features an integrated, thermally protected step-down transformer. Standard versions include a high-efficiency (>90%) 120V Magnetic Low Voltage (MLV) toroidal transformer with a boost tap to overcome dimmer losses. High power factor electronic (ELV) configurations are also available.
Junction Box: Rated for four No. 12 AWG 90°C through-branch circuit conductors. Includes push-in electrical connectors alongside five 1/2" knockouts, one 3/4" knockout, and four non-metallic sheathed cable knockouts.

Housing & Mechanical Dimensions

Physical Profile: Measures 19-5/8" Length x 13-3/4" Width x 8-15/16" Height.
Ceiling Cutout: Requires a 4-1/4" cutout for round apertures (IC43N) and a 4-1/8" cutout for square iterations (IC43SQ).
Aperture & Ceiling Profile: Accommodates a 3-1/4" trim size. The plaster frame consists of black-painted steel paired with a black aluminum housing to preserve a dark interior cavity. Standard setups support 1/2" to 7/8" thick ceilings, extendable up to 2" with optional adapters.

Mounting & Installation Systems

Pro-VI™ Bar Hanger System: Features a patented telescoping bar hanger system with locking set screws to eliminate flexing. It allows quick anchoring to suspended ceiling T-bar grids or joists up to 24" on-center.
Tru-Line™ Platform Adjustment: Includes a patent-pending adjustment mechanism allowing +/- 1/2" linear translation and +/- 45° aperture rotation, making it easy to align multiple fixtures perfectly before drywall installation.

Regulatory Codes & Standards

Safety Listings: UL and cUL listed for direct insulation contact (Type IC) and through-branch wiring.
Environmental Ratings: Rated for damp locations (and wet locations when paired with approved lensed trims). Meets ASTM E283 requirements for air-tight building envelope standards.

Warranty:

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Condition:
* New, Old Stock in OEM Packaging. As Pictured.

* An item in excellent condition with no functional defects. The item may be missing original packaging and may have been used for testing or demo purposes.

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