Can you believe we are reaching Q4 already? To prepare for Knox's annual plant shut down for maintance (Mid December),


Any orders placed after this date will likely be unable to be fulfilled until 2023.

If you have further questions please email or give us a call at 720-710-5669.

Thanks, The Sentry Tech Team

KnoxVault® 4400- Englewood FD

Calculated at Checkout
  • Model #4401- Surface Mount, Single Lock, Black 
Model #4432- Recessed Mount, Dual Lock, Black
  • Model #4413- Surface Mount, Single Lock, Dark Bronze 
Model #4445- Recessed Mount, Dual Lock, Dark Bronze
  • Model #4409- Surface Mount, Single Lock, Aluminum 
Model #4441- Recessed Mount, Dual Lock, Aluminum
MSRP: $1,120.00
— You save $339.00
Frequently bought together:


  • Benefits
  • Options
  • Accessories
  • Specs
  • Mounting
  • Need Help?
  • FAQ


The KnoxVault 4400 is a secure, high capacity key lock box trusted by first responders, property owners, and universities. Store up to 50 keys, access cards and/or emergency plans to quickly gain rapid emergency access to large business and industrial facilities and campuses.


  • Large capacity, storing up to a 50 keys. Access cards, entry items, emergency planning documents, and FDC Keywrench may also fit in interior compartment but will reduce max key quantity.
  • Built Knox-Rugged and secure: UL 1037, UL 1610, UL 1332, UL 437
  • Finished with Knox-Coat® to protect four times better than standard powder coat
  • Extreme weather-resistant door gasket


  • Allows rapid property access
  • Reduces property damage
  • Prevents forced entry into buildings
  • Minimizes first responder injury
  • Compliant to National Fire Code (NFPA, IFC, IBC)

Right click HERE to download spec sheet for dual lock

Right click HERE to download spec sheet for dual lock

Right click HERE to download mounting instructions

Right click HERE for more information on Jurisdictional Rules



1. Select Your Mount Types:

  • Recessed
  • Surface

2. Color Optionicon showing Knox Box color options

  • Black
  • Aluminum
  • Dark Bronze

3. Locking Configuration

  • Single Lock
  • Dual Lock (Allows for shared agency)

3. Add Tamper Switch

Although our box is UL 1037 Listed and built Knox Rugged, we strongly suggest to all our property owners to invest in the Knox Tamper Alert System. A minimal investment, that will protect your big investment, your property. In the event that your box is opened or removed from the wall, Knox Tamper Alert System will notify you, and may prevent potential vandalism or unwanted entry.

Right click HERE to download tamper switch installation instructions





To insure procurement and delivery of the KnoxVault 4400, it
is suggested that following specification paragraph is used:

KnoxVault surface/recessed mount with/without UL Listed Knox
Tamper Alert.

1/4” plate steel housing, 5/8” thick steel door with
interior gasket seal. Vault & lock UL Listed.

Lock has 1/8” dust cover with tamper seal mounting capability. Vault has anti-theft re-locking mechanism with drill resistant hard-plate lock protector.

Exterior Dimensions: Surface Mount - 7”H x 7”W x 5”D
Recessed Mount Flange - 9 1/2”H x 9-1 /2”W

Lock: UL Listed. Double-action rotating tumblers and hardened
steel pins accessed by a biased cut key.

Finish: Knox-Coat® proprietary finishing process

Color: Black, Dark Bronze or Aluminum

P/N: KnoxVault 4400 (mfr’s cat. ID)


Right click HERE to download complete Spec Sheet for dual lock

Right click HERE to download complete Spec Sheet for single lock


Right click HERE to download mounting instructions


Need help finding the right product? Happy to help!

Contact US!

Ordering Support:

Call Us: 720-710-KNOX (5669)

Email Us:

Or simply right click HERE to send us a message!


6311 Washington St.
Unit H
Denver, CO 80216

MON-FRI 9:00AM-5:00 PM MST

We are happy to help with any questions that you may have.

What Product Model Do I Need to Order?

Contact your local Fire or Public Safety Department for Knox product recommendations.

Who Installs the Products?

KnoxBoxes can be installed by any trusted maintenance professional, handyman, or contractor. Click here to see product mounting instructions.

What is a Tamper Switch

The Knox Tamper Alert is installed inside either the KnoxBox 3200 or KnoxVault 4400 and connects to the alarm on your building. If anyone tampers with the box, the alarm will be activated. Click here for more information.

What is Dual Lock For?

Dual locks allow shared agency access so first responders can immediately gain access during emergencies. For example, fire departments, law enforcement, and emergency medical services may share access to properties in their local jurisdictions.

What is a Multi-Purpose Switch?

The multi-purpose switch is mounted inside the KnoxBox and can be used to unlock Maglocks, electrical doors, and gates that are controlled by low voltage circuits. Other electrical equipment can also be operated by this switch. Click here for more information.

What are Spec Sheets?

Spec sheets are available on this page under the "Brochures & Specs" section or can be found here for dual lock and here for single lock.

What Sizes are Available?

KnoxBoxes come in two sizes: KnoxVault, a larger-sized key lockbox (7"H x 7"W x 5"D) and KnoxBox, a smaller-sized key lockbox (4"H x 5"W x 3-3/4"D). See above for product spec sheet.

What Colors are Available?

Both the KnoxVault 4400 Series and KnoxBox 3200 Series are available in dark bronze, aluminum and black.

Have More Questions?

Click here to email us your questions. Or give us a call 720-710-KNOX (5669)

View AllClose

Additional Information

The KnoxVault 4400 is the number one high-security key lock box trusted by first responders and property owners. Store up to 50 keys to quickly gain rapid access to commercial properties.
View AllClose