Phoenix World Class 4-Drawer Lateral Fireproof File Cabinet, 31" Wide, Class 350 1-Hour Rated (LAT4W31)

The Phoenix LAT4W31 Fireproof Lateral File Cabinet is a 4-drawer, 31" wide lateral fireproof file cabinet designed for legal and letter-size filing in a space-efficient footprint. It is built for offices, records rooms, legal departments, medical practices, schools, accounting departments, government agencies, and businesses that need dependable protection for important paper records.

This model provides high-capacity vertical filing while using less floor width than wider lateral fireproof cabinets. The 31" wide format makes it a strong choice for offices with tighter hallways, smaller records rooms, narrow placement areas, or limited floor space. Files can be stored letter or legal size, front-to-back or side-to-side, giving your office flexible filing options in one cabinet.

The LAT4W31 is built with Phoenix fire-resistant construction and proprietary Styronite® insulation. It carries a UL Class 350 fire rating and is tested to withstand 1700°F for 1 hour. Each drawer is independently insulated to help protect contents even if another drawer is open. The cabinet is also impact tested, explosion tested, and water resistant, making it a serious records protection solution rather than a standard metal file cabinet.

Key Product Details

• Model: LAT4W31
• Product Line: World Class Insulated Files
• Drawer Count: 4 drawers
• File Compatibility: Letter and legal-size files, side-to-side or front-to-back
• Exterior Dimensions: 54-3/4"H x 31"W x 23-5/8"D
• Interior Drawer Dimensions: 10-1/2"H x 25"W x 15"D
• Weight: 668 lbs.
• Standard Colors: Black, Light Gray, and Putty
• Delivery: Free white glove delivery included
• Warranty: 3-Year Parts and Labor Warranty plus Lifetime After-Fire Replacement Warranty

Fire, Impact, and Water Protection

The Phoenix LAT4W31 is designed to protect paper records from fire and related emergency conditions. The cabinet is UL Class 350 rated for 1 hour at 1700°F, helping keep paper documents below critical temperatures during a fire. This level of protection is important for businesses that store records that cannot be easily replaced, including contracts, legal files, medical records, financial documents, personnel files, and permanent business records.

The cabinet is also tested to withstand a 30 foot drop while maintaining integrity. This is important because real fires can involve falling debris, collapsing floors, and emergency response conditions. The LAT4W31 is also explosion tested for 2000°F flash fire exposure.

Water resistance is another important part of fire protection. Sprinklers and fire hoses can damage documents even if the fire itself does not reach the cabinet. The LAT4W31 uses labyrinth seals and gaskets to help resist water from sprinklers and fire hose spray.

Security and Drawer Protection

• Key-operated plunger lock: The standard lock secures all drawers at once and includes 2 keys.
• Separate insulated drawers: Each drawer is independently insulated for added protection.
• Anti-tip protection: Prevents more than one drawer from opening at the same time.
• Heavy-duty suspension: Supports smooth drawer operation, even under load.
• Durable finish: Textured enamel finish is designed for professional office use.

The separate insulated drawer design is especially useful in active office environments. If one drawer is open during an emergency, the remaining closed drawers continue to provide protected storage as separate insulated compartments. This helps reduce the risk of losing the entire cabinet contents if the file cabinet is being accessed when an emergency begins.

Cabinet Construction

The LAT4W31 is built for long-term commercial records storage. Its 31" wide lateral format provides useful filing capacity while helping preserve floor space. The 4 full-width drawers provide organized storage for active files, archived records, client files, case files, employee records, accounting files, school records, and other important documents.

The cabinet supports both letter and legal-size filing, front-to-back or side-to-side. This flexibility makes it useful for offices with mixed filing systems or departments that need to organize different file types in one cabinet. The drawer suspension is designed to handle loaded drawers, while the anti-tip system helps keep the cabinet safer during daily use.

Specifications

Delivery Information

This cabinet includes free white glove delivery. Because the cabinet weighs 668 lbs., delivery details must be reviewed before shipment. Please tell us in advance if the delivery location includes stairs, tight turns, elevators, narrow doorways, small truck access, remote locations, or any other special access conditions.

• Commercial or residential delivery: Available with free shipping.
• Dock-to-dock delivery: Best for commercial locations with a loading dock. The cabinet is left on the pallet at the dock.
• Liftgate or curbside delivery: Used when no loading dock is available. The cabinet is lowered to ground level and left outside on the pallet.
• Full-service delivery: The cabinet is brought inside, placed where requested, and packaging is removed. Maximum of 3 steps inside the building. Please allow approximately 10 business days.

Additional charges may apply for stairs, restricted access, remote locations, small truck requirements, or other special site conditions. Delivery details are confirmed before shipment. Failure to disclose special delivery conditions may result in additional fees or restocking charges if the unit is returned.

Helpful Resources

• Shop All Lateral Fireproof File Cabinets
• Browse All Fireproof File Cabinets
• View Phoenix 3 Drawer 31" Models
• View Phoenix 2 Drawer 31" Models