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Keystone Lighting

LED High Bays LED High Bays LED lighting for warehouses and high ceilings
LED Downlights LED Downlights Recessed LED lighting for ceilings
LED Flat Panels LED Flat Panels LED ceiling panels for commercial spaces
LED Center Basket Troffers LED Center Basket Troffers Recessed fixtures with a center-mounted LED basket
LED Flat Panel, Troffer and Strip Fixture Retrofit Kits LED Flat Panel, Troffer and Strip Fixture Retrofit Kits Upgrade existing fluorescent fixtures to LED
LED Linear Fixtures LED Linear Fixtures Linear LED lighting for commercial spaces
LED Area Lights LED Area Lights Outdoor LED lighting for parking lots and roadways
LED Vapor Tights LED Vapor Tights Sealed fixtures for wet and harsh environments
LED Wrap Fixtures LED Wrap Fixtures LED wraparound lights for general lighting
LED Under Cabinet Fixtures LED Under Cabinet Fixtures LED lighting for cabinets and workspaces
LED Tube Ready Fixtures LED Tube Ready Fixtures Fixtures designed for replaceable LED tubes
LED Canopy Fixtures LED Canopy Fixtures LED lighting for canopies and garages
LED Dusk-to-Dawn Fixtures LED Dusk-to-Dawn Fixtures Photocell-controlled lighting that turns on automatically at night
LED Flood Lights LED Flood Lights Outdoor LED lighting for large areas
LED Wall Packs LED Wall Packs LED wall lighting for building exteriors
LED Wall Mount Cylinders LED Wall Mount Cylinders Architectural wall lights with up/down illumination
LED Microstrip Fixtures LED Microstrip Fixtures Compact linear fixtures for tight spaces
LED Wall Washer LED Wall Washer Linear lighting for illuminating walls and architectural surfaces
LED Bollards LED Bollards LED pathway lighting for outdoor spaces
LED Lamps LED Lamps Everyday LED bulbs for residential and commercial fixtures
LED HID Retrofits LED HID Retrofits LED replacements for HID and metal halide lamps
Sign Hero T8 LED Lamps Sign Hero T8 LED Lamps LED tubes designed for illuminated signs
T8 LED Lamps T8 LED Lamps LED replacements for T8 fluorescent tubes
T5HO LED Lamps T5HO LED Lamps High-output LED replacements for T5HO fluorescents
T5 LED Lamps T5 LED Lamps LED replacements for standard T5 fluorescent tubes
LED FutureFit Kits LED FutureFit Kits Retrofit kits for converting existing fixtures to LED
LED CFL Replacement LED CFL Replacement LED replacements for plug-in CFL lamps
LED PAR Lamps LED PAR Lamps LED reflector lamps for flood and spot lighting
UV-C Germicidal Lamps UV-C Germicidal Lamps UV-C lamps for germicidal applications
Keystone LED Emergency Backup Kits Keystone LED Emergency Backup Kits Battery backup kits for emergency LED operation
Exit / Emergency Lighting Exit / Emergency Lighting LED exit signs and emergency lighting
LED Drivers LED Drivers Power supplies for LED lighting
Light Poles Light Poles Mounting poles for parking lot and site lighting
Accessories Accessories Lighting accessories and replacement parts
More about Keystone Technologies Keystone Technologies has come a long way from their humble beginnings over 70 years ago, manufacturing ballasts and transformers. Headquartered in Philadelphia, the company is a third generation family-owned business with a history of supplying those ballasts and transformers to some of the major players in lighting at the time, who also called the area home. With the invention of LED technology, Keystone began offering LED drivers. Using their experience making ballasts, the company continued to create products that would propel them into the lighting supply market. It wasn’t long before Keystone’s LED lamp business took off, with immediate success with both SmartDrive (plug and play) and DirectDrive (ballast compatible) technologies. Today, LED products make up the majority of Keystone’s business. Going forward, they’ve dedicated themselves to advance alongside LED technology. Part of that involves a focus on retrofitting, with their line of LED Future Fit kits. These pre-packaged kits allow you to quickly and easily retrofit your existing fixtures to energy-efficient LED, resulting in a significant energy savings and lowered electricity bills. Retrofit kits install quickly with the required Keystone driver, LED modules and mounting accessories. We offer a complete line of Keystone’s LED fixtures, lamps and accessories, including our best-selling LED Sign Hero T8 sign tubes; the fastest solution for upgrading outdoor business signage to LED. And, their Premium Series Micro LED Strips; an easy and economical way to quickly enhance a commercial or industrial space. Our knowledgeable lighting specialists are available via phone or chat to answer your questions about the latest LED technology, and to assist you in choosing the best Keystone products to fit your needs.

Keystone Lighting FAQs

Keystone Technologies is known for commercial lighting products that simplify retrofit work, including LED tubes, HID and compact-fluorescent replacements, fixtures, retrofit kits, drivers, ballasts, emergency products, controls, and accessories.

PROLIGHTING carries Keystone LED tubes, HID retrofit lamps, PL lamps, sign tubes, downlights, high bays, panels, troffers, outdoor fixtures, retrofit kits, emergency equipment, drivers, ballasts, controls, and related accessories.

Keystone SmartDrive tubes are Type A, ballast-compatible lamps designed to operate on approved existing ballasts. DirectDrive tubes are Type B, line-voltage lamps that bypass or remove the ballast. Some Keystone dual-mode products can operate as Type A and later be rewired as Type B.

It depends on the lamp type: Type A uses a compatible ballast, Type B operates on line voltage after the specified ballast-bypass wiring, and Type C uses a compatible external LED driver. Type A+B products support more than one approved installation method.

Start with the existing lamp and fixture wattage, base, voltage, orientation, physical space, enclosure, mounting height, lumen target, and control requirements. A FutureFit kit is useful when replacing the internal light engine, while an HID retrofit lamp can reuse a suitable socket and fixture body.

Many Keystone commercial products are DLC listed, but not all products or configurations qualify. Confirm the exact catalog number in the current DLC database and then check the local utility's rebate rules before purchase or installation.

An LED retrofit kit replaces the internal light source and often the driver while retaining a usable fixture housing. Retrofit when the housing, mounting, and optics remain suitable; replace the complete fixture when the housing is damaged, the desired distribution or controls cannot be achieved, or labor and long-term serviceability favor a new fixture.

Locate the ballast manufacturer and full model number, then compare it with Keystone's current compatibility list for the exact tube. Also verify lamp count, ballast factor, input voltage, and whether the ballast is instant-start, programmed-start, or another supported type.

Yes. Many Keystone lamps are available by case, and PROLIGHTING offers trade and volume-pricing options. Packaging quantities and discounts vary by SKU, so request a quote with the required model and quantity.

Keystone warranty duration varies by product category and specification. Keep the invoice and product/date-code information, then submit the failure details through PROLIGHTING or Keystone's warranty-claim process for confirmation.

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