FireKing 4-3122-C 31-Inch Wide 4-Drawer Lateral Fireproof File Cabinet

The FireKing® Classic Lateral Fireproof File Cabinet, Model 4-3122-C, is a 4-drawer, 31-3/16" wide fireproof lateral file cabinet built for serious letter and legal-size document protection in a narrower footprint. It is designed for law offices, medical records departments, accounting firms, government offices, schools, corporate offices, and records rooms that need secure filing capacity without moving to a wider 38" or 44" lateral cabinet.

This FireKing Classic lateral cabinet combines UL Class 350 1-hour fire protection, 30-foot impact testing, ETL 30-minute digital media verification, water resistance, a UL-listed Medeco® high-security key lock, and Made in USA construction. It is built for offices that need dependable protection for vital paper records, confidential files, and business documents that cannot be easily replaced.

The 31" wide lateral format helps conserve wall space while still providing four full drawers of protected storage. This makes the 4-3122-C a strong choice for active file areas, private offices, legal departments, clinics, schools, accounting offices, and compact records rooms where space is limited but document protection remains important.

Key Product Details

• Model: 4-3122-C
• Product Line: FireKing Classic Lateral Fireproof File Cabinet
• Drawer Count: 4 drawers
• File Compatibility: Letter and legal-size filing
• Exterior Dimensions: 52-3/4"H x 31-3/16"W x 22-1/8"D
• Interior Drawer Dimensions: 10-3/8"H x 25-3/16"W x 15-1/8"D
• Weight: 794 lbs.
• Standard Lock: UL-listed Medeco® high-security key lock
• Country of Origin: Made in USA
• Warranty: FireKing Limited Lifetime Warranty

Certified Protection Ratings

The FireKing 4-3122-C is built for real-world disaster protection, not just everyday file storage. The UL Class 350 1-hour fire rating helps protect paper records during severe fire exposure. The cabinet is also impact tested with a 30-foot drop after the burn test, helping protect contents in conditions associated with building fires, falling debris, and structural collapse.

This model also includes ETL 30-minute fire verification for common digital media such as hard drives, CDs, DVDs, and thumb drives. Important digital records should still be backed up off-site or in the cloud, but this rating provides additional short-term protection for certain media stored inside the cabinet.

Water resistance is also important because sprinklers and fire hoses can damage files even when flames do not directly reach the cabinet. FireKing Classic lateral cabinets are designed to help protect contents from water exposure during emergency response.

Filing Features and Daily Use

• Letter and legal filing supports the most common office file sizes.
• Narrow 31" lateral format provides four drawers of protected filing in a compact width.
• High-side drawer bodies support hanging folders without separate hanging folder frames.
• 4-drawer capacity is ideal when vertical storage capacity is the priority.
• Independent drawer protection allows each drawer to function as its own insulated container.
• Confidential file storage is useful for legal files, patient records, HR files, accounting records, contracts, titles, deeds, and business documents.

The FireKing 4-3122-C is especially useful when an office needs serious protection but has limited wall space. The narrower cabinet width makes placement easier than larger lateral models, while the four-drawer design still provides strong storage capacity for active records and archived documents.

Construction and Security

FireKing Classic lateral cabinets are built for long-term office use, fire resistance, impact protection, and secure document storage. The cabinet uses 100% gypsum fire-resistant insulation reinforced by a 1" x 2" lattice made of 14-gauge galvanized welded steel wire. Insulation between drawers helps each drawer act as a separate protected compartment.

The powder-coated finish is applied to all sides, including the bottom, and is designed to resist scratches and stains. Field-replaceable steel panels and drawer heads help extend the useful life of the cabinet if exterior damage occurs. Surface-mounted drawer pulls allow more insulation inside the drawer heads, improving the cabinet’s protective construction.

The UL-listed Medeco® high-security key lock offers stronger file security than a standard office cabinet lock. A two-position drawer catch allows access to certain drawers while drawers containing sensitive files can remain locked.

Specifications

Color Options and Delivery

For the fastest delivery, choose one of our primary FireKing finish options: Black, Parchment, or Platinum. Additional FireKing powder-coated colors are available, including Arctic White, Ivory White, Tan, Taupe, Brown, Sand, Champagne, and Pewter. Non-primary colors typically require an additional 10-day lead time before shipment.

This cabinet weighs 794 lbs. and ships by freight on a 53-foot tractor trailer. Standard delivery is intended for commercial business locations with safe truck access, normal receiving hours, and either a loading dock, forklift, or accessible curbside freight area.

Most commercial deliveries are straightforward when the delivery location has normal freight access and the correct delivery option is selected at checkout. Before ordering, please confirm receiving hours, dock access, driveway clearance, and the delivery point.

Delivery Options

• Dock or Curbside Delivery: Best for commercial locations that can receive freight from a full-size truck. The cabinet is delivered on a pallet, and the customer is responsible for moving it from the delivery point.
• Inside Doorway or Garage Delivery: Available as an upgrade for qualifying commercial or residential locations. This service is intended for delivery just inside the first accessible doorway, lobby, receiving area, or garage. The cabinet remains packaged and on the pallet.
• Full-Service Set-in-Place Delivery: Available as an upgrade for qualifying locations with ground-floor or elevator access. This service includes uncartoning, placement, and removal of packaging materials.

Step Limit: Inside delivery and full-service delivery are limited to no more than 3 steps up or down. If your delivery requires more than 3 steps, stairs, tight turns, long carries, restricted truck access, floor protection, a certificate of insurance, a special appointment request, or other unusual site conditions, please contact us before placing your order.

Residential Deliveries: Residential delivery is available; however, this item is a very heavy freight shipment and is best suited for curbside or garage delivery when shipping to a residence. If full-service residential delivery is needed, we may require a delivery review before shipment to confirm truck access, driveway access, doorway clearance, and a safe delivery path. The delivery carrier may be unable to complete full-service delivery if the delivery area is too tight, difficult, or unsafe.

Please review doorway width, hallway turns, elevator access, floor load concerns, and the final placement location before selecting inside delivery or full-service delivery. If you are unsure which delivery option is right for your location, contact us before ordering.

Helpful Resources

• 31" Lateral Spec Sheet
• FireKing Product Color Options
• FireKing Lock Options
• FireKing Warranty Information
• Full FireKing Product Catalog
• Shop All Lateral Fireproof File Cabinets
• Shop All Fireproof File Cabinets