Citadel 4 Wide Vapor Tight LED Enclosure, 4ft Length, IP67 & NSF

Features and Benefits

  • IP67-rated, weather and water resistant
  • NSF Certified for Splash Zones
  • Captive latches won't fall off during maintenance
  • Impact resistant acrylic or polycarbonate lens options
  • Fiberglass housing will not burn or melt and chemical resistant
  • Pour-in-place polyurethane gasket creates watertight seal
  • Made in USA with BAA/BABA compliance
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Overview

The Citadel 4™ Wide Gasketed LED Enclosure is built for large-scale industrial and commercial environments where high output and extreme durability are essential. Its wide-body fiberglass housing accommodates up to 40,000 lumens, making it ideal for high-ceiling spaces that demand serious light output. Featuring a poured-in-place gasket, 316 stainless steel hardware, and IP65/IP66/IP67 plus NEMA 4X ratings, the CT4 handles moisture, dust, chemicals, and high-pressure washdowns without compromise. NSF-certified and designed to minimize debris retention during cleaning, it's a workhorse for food processing, industrial facilities, and anywhere durability meets high-bay lighting needs.



Applications

  • Food processing facilities and commercial kitchens
  • Breweries and beverage production
  • Industrial manufacturing and warehouses
  • Livestock containment buildings
  • Parking garages and utility tunnels
  • Cold storage and walk-in freezers
  • Car wash facilities
  • Laundries and wet processing areas
  • Loading docks and covered outdoor areas
  • Arenas and gymnasiums

Certifications

IP65 Rating - Dust tight and water jet resistant LED lighting
IP66 Rating - Dust tight and high-pressure water resistant LED lighting
IP67 Rating - Dust tight and temporary submersion resistant LED lighting
F1 Rated - UL 746C certified for outdoor UV and moisture resistance
UL Listed - Safety certified by Underwriters Laboratories to UL 1598
RoHS Compliant - Free of lead, mercury, and other hazardous substances
NSF International Certified - Approved for food service and food processing environments
NEMA 4X Rated - Corrosion resistant enclosure for washdown and outdoor use
5-Year Warranty - LED fixture coverage for materials and workmanship

IP65 - Dust Tight & Water Jet Protected

The "6" means completely dust tight. No dust gets in, period.

The "5" means it can handle water sprayed from a hose. During testing, water is blasted at the fixture from all directions using a 6.3mm nozzle at about 3 gallons per minute for at least 3 minutes.

Best for: General outdoor use, parking lots, building exteriors, and covered wash-down areas. This is the most common rating for outdoor commercial lighting.

IP66 - Dust Tight & Powerful Jet Protected

The "6" means completely dust tight. No dust gets in, period.

The second "6" means it handles much stronger water than IP65. Testing uses a 12.5mm nozzle shooting about 26 gallons per minute at nearly 15 PSI from all directions.

Best for: Heavy-duty outdoor applications, food processing areas, marine environments, and places that get pressure-washed regularly.

IP67 - Dust Tight & Submersion Protected

The "6" means completely dust tight. No dust gets in, period.

The "7" means it can survive being underwater. The fixture is submerged in 1 meter (about 3 feet) of water for 30 minutes during testing.

Important note: IP67 is tested for submersion, not water jets. For high-pressure wash-down areas, IP66 is often a better choice.

Best for: In-ground fixtures, areas prone to flooding, mining operations, and severe weather locations.

F1 Rated Material (UL 746C)

This fixture uses F1-rated polycarbonate, which has been tested for long-term outdoor use.

What was tested: The material spent 1,000 hours under intense UV light (simulating years of sun exposure) plus 7 days soaking in 158°F water. After all that, it still had to keep its strength, impact resistance, and fire safety rating.

Why it matters: The lens and housing won't yellow, crack, or break down from years of sun and moisture exposure. Your fixture will look and perform like new for much longer.

UL Listed (UL 1598)

UL (Underwriters Laboratories) is one of the most respected safety testing organizations in the world. A UL listing means the product was sent to their labs, taken apart, tested extensively, and verified to meet strict safety standards.

What they test: Electrical safety, fire hazard prevention, material durability, and proper construction. For lighting, UL 1598 specifically covers luminaires (light fixtures).

Why it matters: Most building codes require UL-listed electrical equipment. It's your assurance that the fixture won't cause fires, electrical shocks, or other safety hazards when installed correctly.

RoHS Compliant

RoHS stands for "Restriction of Hazardous Substances." It's a set of rules from the European Union that limits dangerous chemicals in electronics.

What's restricted: Lead, mercury, cadmium, hexavalent chromium, and certain flame retardants. These substances can harm people during manufacturing and pollute the environment when products are thrown away.

Why it matters: RoHS-compliant products are safer for workers who make them, safer for you to use, and less harmful to the planet when they're eventually recycled or disposed of.

NSF International Certified

NSF International sets standards for products used around food. Their certification means a product is safe to use in restaurants, food processing plants, and other places where hygiene is critical.

What they verify: The fixture won't harbor bacteria, can be properly cleaned, won't contaminate food, and uses materials that are safe around food preparation areas.

Why it matters: Many health codes require NSF-certified equipment in commercial kitchens and food facilities. It's often mandatory—not optional—for food service environments.

NEMA 4X Rated

NEMA (National Electrical Manufacturers Association) ratings describe how well an enclosure protects what's inside. NEMA 4X is one of the toughest ratings available.

What it handles: Windblown dust and rain, splashing water, hose-directed water, and corrosion. The "X" in 4X means the enclosure resists rust and chemical damage from salt air, cleaning agents, and corrosive atmospheres.

Why it matters: Perfect for coastal areas with salt air, food plants with aggressive cleaning chemicals, or any environment where standard metal housings would corrode over time.

5-Year Limited Warranty

Complete Fixture Coverage (5 Years): SLP Lighting provides a five (5) year limited warranty on fully assembled luminaires bearing a complete SLP Lighting part number. This warranty applies exclusively to fixtures manufactured with SLP Lighting LED boards, drivers, and internal wiring, assembled and tested at our facility. Coverage includes defects in materials and workmanship under normal use and installation conditions per product specifications.

Component & Parts Coverage (1 Year): Individual components, replacement parts, and sub-assemblies sold separately—including but not limited to LED boards, drivers, lenses, housings, and wiring harnesses—are covered under a one (1) year limited warranty from date of purchase. This includes components purchased by OEM customers for integration into third-party assemblies.

Warranty Exclusions: Coverage does not extend to damage resulting from improper installation, misuse, unauthorized modification, operation outside specified parameters, or integration of SLP components into non-SLP assemblies. Warranty claims require proof of purchase and the original SLP Lighting part number.

Determining Coverage: The applicable warranty period is determined by the product configuration at time of sale. Purchase of a complete, factory-assembled fixture with a full SLP part number qualifies for five-year coverage. Purchase of individual components or parts qualifies for one-year coverage, regardless of end-use application.

Specification Table

Product Type Vapor Tight Wide Gasketed LED Enclosure Length 4 ft
Dimensions (L x W x H) 51.9" x 14.6" x 5.9" Housing Material UL 5VA Fiberglass (f1 Rated)
Weight Varies by configuration Lens Material Acrylic or Polycarbonate
Lens Options Smooth Clear Acrylic, Smooth Frosted Acrylic, Smooth Clear PC, Smooth Frosted PC Lumen Packages 20,000 – 40,000 lumens
Wattage Range Based on LED configuration Efficacy Based on LED configuration
CCT Options 3000K, 3500K, 4000K, 5000K, Selectable 35K-40K-50K CRI 80 (Standard), 90 (Optional)
Operating Voltage Universal (120-277 VAC) or High Voltage (347-480 VAC) Frequency 50/60 Hz
Power Factor >0.90 Dimming 0-10V Standard, Dim-to-Off Option
IP Rating IP65, IP66, IP67 NEMA Rating 4X
NSF Certified Yes UL Listing Wet Location, UL 1598
Ambient Temp Rating 25°C and 40°C (UL Evaluated) Certifications/Compliance RoHS, DLC QPL, NSF, PSI 1500, Patented
Mounting Options V-Hook, Single Pendant, Dual Pendant Hub Sizes ½" NPT (Top, End, Both Ends), ¾" NPT (Center)
Latch Options White Polymer or 316 Stainless Steel Board Tray Options 4 Rows (0.95" or 1.60" LED Boards)
Optional Features 10W Emergency Backup, External PIR Occupancy Sensor, 10 ft Cord/Cord with Plug Warranty 5 Year

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