Keystone KT-VTLED44PS XFit Color & Power Select 4ft Vapor Tight — 44W/28W/18W Selectable — 3500K/4000K/5000K — Frosted Polycarbonate Lens

The Keystone KT-VTLED44PS-4A-8CSA-VDIM is a commercial 4ft Vapor Tight luminaire engineered to deliver up to 5,852 lumens with field-adjustable 44W/28W/18W Power Select settings and switchable 3500K/4000K/5000K Color Select temperatures (factory preset to 44W/5000K). Operating on 120–277V electrical systems with 0–10V (down to 10% minimum) continuous dimming, this narrow-body luminaire provides high-efficiency illumination for commercial, industrial, and outdoor applications. Built with a UL Certified for Wet Locations rating, it is qualified for commercial utility rebates under DLC Listed standards and features an IP66-sealed, NEMA 4X, IK10 impact-rated, and ETL Sanitation Listed (NSF/ANSI Standard 2 Splash Zone) enclosure.

Key Features

• Selectable Wattage: 44W / 28W / 18W (factory preset to 44W) — Keystone Power Select multi-wattage selectable driver for variable power settings
• Maximum Lumen Output: 5,852 lm at 44W (5000K)
• Peak Efficacy: 144 lm/W (at 18W / 5000K) for high-efficiency commercial operation
• CRI: >80 color rendering across all settings (color uniformity per ANSI C78.377-2017)
• Selectable CCT: 3500K / 4000K / 5000K (factory preset to 5000K) — Keystone Color Select field-adjustable CCT for tunable white and switchable Kelvin control
• Lens & Optics: Smooth, diffused, impact-resistant frosted polycarbonate lens for an even lit appearance
• Dimming: 0–10V continuous dimming down to 10% minimum standard
• Voltage: Universal 120–277V AC Keystone constant current driver with 12V auxiliary leads
• Location Rating: UL Certified for wet locations
• Operating Temperature: -40°F (-40°C) to 122°F (50°C) ambient operating range
• Certifications: DLC Listed, UL Certified, ETL Sanitation Listed (NSF/ANSI Standard 2 Splash Zone), NEMA 4X, IP66, IK10, NLB Trusted Warranty
• Rated Life: L70 >100,000 hours LED chip lifetime at 77°F (25°C) ambient fixture temperature (50,000 hours system lifetime table rating)
• Warranty: 10-year limited warranty — Keystone

Performance & Light Output

At 44W: 5,764 lm (3500K / 131 lm/W), 5,808 lm (4000K / 132 lm/W), 5,852 lm (5000K / 133 lm/W). At 28W: 3,892 lm (3500K / 139 lm/W), 3,920 lm (4000K / 140 lm/W), 3,948 lm (5000K / 141 lm/W). At 18W: 2,556 lm (3500K / 142 lm/W), 2,574 lm (4000K / 143 lm/W), 2,592 lm (5000K / 144 lm/W).

CRI >80 across all configurations. Rated life >100,000 hours (L70) LED chip lifetime at 77°F (25°C) ambient fixture temperature (50,000 hours system rating).

Smart & Control Features

The KT-VTLED44PS-4A-8CSA-VDIM vapor tight supports wired 0–10V dimming and modular motion and occupancy sensing:

• 0–10V Continuous Dimming (Standard): Dims smoothly down to 10% minimum on standard 0–10V low-voltage control circuits (Purple 0–10V+ and Pink 0–10V- leads).
• Motion & Occupancy Sensor Compatibility (Accessory): Compatible with Keystone motion and occupancy sensors featuring high-end trim and daylight sensing, supported by pre-wired 12V DC auxiliary driver leads (Yellow 12V+ and Brown 12V-).

Compatible factory- or field-installable sensor kits include KTS-MW3-UV-KO-K2 (suffix /MW3, Microwave Multifunction Occupancy/Daylight Sensor Kit with 120–277V to 12V DC converter, IP65 12V sensor head, Nomex sleeve, extension neck, daylight and PIR motion sensor, 3A max load with 0–10V dimming — sold separately).

Electrical

Powered by a Keystone 120–277V AC constant current dimming LED driver. Delivers high electrical efficiency with a Power Factor >0.95 (>0.9 table spec) and Total Harmonic Distortion (THD) <20%. Includes pre-wired 0–10V dimming leads (Purple/Pink) and 12V DC auxiliary output leads (Yellow/Brown).

Construction

Durability & Impact Protection: Traditional narrow-body vapor tight enclosure with stainless steel tamper-resistant lens clips (tamper-proofing screws not included) engineered for rugged, demanding applications. IK10 rated for maximum protection against heavy mechanical impact, paired with a NEMA 4X corrosion-resistant enclosure and ETL Sanitation Listing to NSF/ANSI Standard 2 (Food Equipment, Splash Zone; not for Direct Food Zone).

Ingress Protection: IP66 rated and UL Certified for wet locations for complete protection against airborne dust and powerful water jets (not suitable for car wash applications or applications with heavy pressure spray/splashing with petrochemical detergents, chlorine, or prolonged humidity above 85%).

Operating Temperature: Operating ambient temperature range of -40°F (-40°C) to 122°F (50°C).

Lens & Optics: Smooth, diffused, impact-resistant frosted polycarbonate lens providing an even lit appearance (95.0% downward luminaire output from 0–90° and 5.0% uplift from 90–180°).

Dimensions & Weight: 47.25" L × 3.54" W × 2.00" H.

Installation & Mounting

Standard Mounting: Includes standard mounting hardware, cordgrip, and hole plug for out-of-the-box installation.

Accessories (Sold Separately):

• Mounts & Hardware: KT-VTLED-45SM-1-KIT (45° Steel Surface Mount Kit for all Keystone vapor tight fixtures, UPC 843654123455 / Easy Code JDN-49, sold separately), KT-VTLED-TPSCREW-KIT (Screws for tamper-proofing vapor tight fixtures, includes 14 screws, sold separately)
• Sensors & Controls: KTS-MW3-UV-KO-K2 (suffix /MW3, Microwave Multifunction Occupancy/Daylight Sensor Kit, UPC 843654134352 / Easy Code TBV-76, sold separately)
• Cord Sets: KT-CS-515P-6-18/3 (/515P6, 6' 125V NEMA 5-15P straight blade cord set, sold separately), KT-CS-L715P-10-16/3 (/L715P10, 10' 277V NEMA L7-15P twist lock cord set, sold separately), KT-CS-L615P-10-16/3 (/L615P10, 10' 250V NEMA L6-15P twist lock cord set, sold separately), KT-CS-L515P-10-16/3 (/L515P10, 10' 125V NEMA L5-15P twist lock cord set, sold separately), KT-CS-L715P-6-16/3 (/L715P6, 6' 277V NEMA L7-15P twist lock cord set, sold separately), KT-CS-L615P-6-16/3 (/L615P6, 6' 250V NEMA L6-15P twist lock cord set, sold separately), KT-CS-L515P-6-16/3 (/L515P6, 6' 125V NEMA L5-15P twist lock cord set, sold separately), KT-CS-NP-10-16/3 (/NP10, 10' 16/3 SJTOW cord no plug, sold separately), KT-CS-NP-6-16/3 (/NP6, 6' 16/3 SJTOW cord no plug, sold separately), KT-CS-NP-15-16/3 (/NP15, 15' 16/3 SJTOW cord no plug, sold separately)

Certifications & Rebates

• DLC Listed: Qualifies for commercial utility rebate incentives across regional energy programs. To confirm rebate eligibility with your local utility provider, visit designlights.org and search DLC Product ID S-QHSKVR or S-467NDQ (or model KT-VTLED44PS-4A-8CSA-VDIM).
• UL Certified: Certified for wet locations.
• NSF / ETL Sanitation: ETL Sanitation Listed to NSF/ANSI Standard 2 — Food Equipment, Splash Zone (not for Direct Food Zone).
• NEMA & IK Ratings: NEMA 4X rated enclosure; IK10 impact certified.
• NLB Trusted: Verified under the National Lighting Bureau Trusted Warranty Program.

Typical Applications

• Commercial Kitchens & Food Prep Splash Zones — ETL Sanitation Listing to NSF/ANSI Standard 2 (Splash Zone) and NEMA 4X enclosure meet commercial food-service sanitation standards.
• Industrial Manufacturing & Utility Corridors — IK10 impact rating and stainless steel tamper-resistant lens clips protect the luminaire against heavy mechanical impacts.
• Cold Storage & Refrigerated Walkways — Reliable -40°F (-40°C) to 122°F (50°C) ambient operating range ensures consistent output in sub-zero freezers.
• Parking Garages & Covered Canopies — IP66 ingress protection and UL wet location certification defend against airborne dust and windblown rain.
• Stairwells & Back-of-House Service Bays — Power Select (44W/28W/18W) and Color Select (3500K/4000K/5000K) switches allow contractors to customize light levels on-site.

What's Included

• Keystone KT-VTLED44PS-4A-8CSA-VDIM 4ft XFit LED Vapor Tight — Frosted Lens
• Standard mounting hardware, cordgrip, and hole plug
• Stainless steel tamper-resistant lens clips (tamper-proofing screws sold separately)
• Installation and operation manual