GE 20830 Q42MR16/C/VNSP9 EZY

The GE ConstantColor® Precise™ 20842 (Q42MR16/C/VNSP9) Lamp is a premium, commercial-grade low-voltage tungsten halogen reflector spotlight engineered for high-impact, long-throw accent displays, museum artifact highlighting, and luxury retail showcase tracks. Delivering a tightly focused, razor-sharp 9° very narrow spot beam spread, this elite lamp yields an intensive 12,300 center beam candlepower (CBCP). Outfitted with an industry-standard GX5.3 bi-pin base and a specialty multi-layer dichroic coating, it provides an extended 3,500-hour rated average service life while maintaining perfect color rendering over its entire runtime cycle.

ADL Supply Expert Application & Replacement Guide

The GE ConstantColor Precise 20842 series bulb is an architectural and retail lighting standard specified heavily by gallery lighting curators, electrical contractors, and luxury commercial display teams. Featuring an ultra-tight, pin-point 9-degree directional beam alignment, this module is engineered explicitly to cast tight focus pools from tall ceilings onto high-end jewelry displays, mannequin arrangements, fine art sculptures, and textured walls without casting raw stray light scatter onto secondary perimeters.

Critical Dichroic Heat Paths and Mandatory Enclosure Safety Rules: Unlike standard block-aluminum lamps that throw thermal energy forward onto targeted merchandise, GE's ConstantColor Precise line incorporates a specialized **dichroic (interference) glass coating formulation**. This geometric lining allows infrared light to travel out the backend, channelling approximately **66% of generated filament thermal energy backward through the rear of the lamp reflector dish**, while throwing only crisp, cool visible white light out the front face. This thermal barrier prevents early material fading or degradation on heat-sensitive inventory like cosmetics, fine chocolates, and luxury leathers.

However, maintenance crews must enforce two definitive installation rules: because this lamp uses an **Open-Face design with no integrated cover glass, it must be operated strictly inside fully enclosed luminaires incorporating a secondary tempered glass safety shield lens**. Running this pressurized capsule inside open track heads is prohibited. Furthermore, ensure track cylinders feature back venting openings so the backward-routed heat can escape cleanly without melting the internal ceramic socket contacts.

Detailed Product Specifications

• Brand: GE Lighting (Current Lighting Solutions / ConstantColor® Precise™ Line)
• Product Series Line: Low-Voltage Dichroic Reflector MR16 ConstantColor Series
• GE Factory Product Order Code SKU: 20842 (Replaces misprinted entry 20830)
• Manufacturer Description Nomenclature: Q42MR16/C/VNSP9
• Trade Industry ANSI Identification Code: EZY Certified Drop-in Standard
• UPC Barcode Number (GTIN-12): 043168208420
• Core Technology Class: Low-Voltage Miniature Tungsten-Halogen Reflector
• Operational Wattage: 42 Watts
• Nominal Input Voltage Requirement: 12 Volts AC/DC (Step-down transformer circuit required)
• Center Beam Luminous Intensity: 12,300 Candelas (cd)
• Beam Spread Profile: 9° Precision Very Narrow Spot (VNSP)
• Color Temperature Configuration: 3000K Warm White Halogen Balance
• Color Rendering Index (CRI): 100 Ra (Absolute Light Quality Representation)
• Reflector Envelope Construction: Multi-Layer Dichroic Interference Glass (Backend Thermal Transmitting)
• Front Lens Treatment: Open-Face Design (No Cover Glass Shield — Enclosed Fixtures Required)
• Base Type Configuration: GX5.3 Miniature Plug-In Bi-Pin Base (2-Pin Setup)
• Pin Spacing Pitch Metric: Exactly 5.3mm Pin Center-to-Center Pitch
• Maximum Overall Length (MOL): 1.875" Inches (47.6mm actual length)
• Bulb Nominal Diameter (DIA): 2.00" Inches Nominal MR16 (50.8mm actual reflector face width)
• Rated Average Lifespan: 3,500 Hours (Constant Regulated Voltage)
• Chassis Burn Position Limit: Universal — Operates reliably in any mounting angle
• Spectral Protection: Integrated UV-Control Internal Capsule Filtering Block

Operation, Safety & Mounting Compliance

Low-Voltage Transformer and Dimming Controls

This 42-watt capsule operates strictly on low-voltage 12V lines driven by high-quality electronic or magnetic core-and-coil step-down transformers. Check your transformer nameplate under load to confirm total available wattage parameters safely accommodate the 42W continuous load draw. This module is 100% dimmable to low light levels—to prevent filament buzzing or flicker loops across the system, ensure that your wall dimmers are specifically certified for low-voltage lighting control (electronic low-voltage ELV or magnetic low-voltage MLV tracking, matching your transformer's internal circuit framework).

Handling Rules and Casing Maintenance

Never handle the internal clear quartz capsule or reflector face with bare hands during installation loops. Human fingers automatically deposit microscopic alkaline body oils that fuse chemically to the quartz lens during rapid heating cycles. This containment creates localized hot spots, prompting envelope clouding, micro-fracturing, and accelerated pressure breakdown. Installers must execute re-lamping sweeps using clean cotton tech gloves, a microfiber lint-free wipe, or its protective cardboard wrapper sleeve. Meticulously wipe the bulb with isopropyl alcohol if skin tracking occurs. Let the track head cool down for 15 minutes before servicing components to prevent contact skin burns.

Commercial Equipment Industry Cross-References

This 42W ANSI EZY lamp replaces or acts as an equivalent drop-in for the following models:

• Sylvania Tru-Aim Cross: 54181 / 42MR16/T/VNSP9 / Tru-Aim Titan Extended Life
• Philips MasterColor Match: 42MR16/Precise/VNSP9 / Premium Spot Cross
• Ushio Reference: 1000344 / JR12V-42W/VNS/F50 / Ultraline Very Narrow Spot

Bulk Commercial Lighting Supply & Project Support

ADL Supply handles volume distribution shipments, multi-pack logistics, and contractor project quotes for procurement teams, schools, and warehouse facilities nationwide.

For specialized contractor pricing tiers, job-site pallet deliveries, or comprehensive submittal documentation, contact our support team directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.