I really need to know the cubic footage of this safe to compare to other ones. Do you know?

I measured the inside and found it to be:9 1/2" tall, by 8" deep, by 12" wideAdditionally, the recess in the lid is 2"tall by 8" deep, by 12" wide.All told, the cubic inches are 1104 and cubic footage would be 0.639You can stand a 3-ring binder upright or on it's side.

Can this fit legal-paper sized documents?

No, it isn't wide enough. It only will fit regular size file folders (for 8.5 x 11" documents).

What is the cubic foot size of the SentrySafe HD4100CG?

the opening is 8" x 12" wide, with a ridge that holds a hanging folder just off the bottom, about 9" hanging depth. there is a little head room so the folder tabs will clear the top when closed.

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HD4100 Fireproof Safe and Waterproof Safe with Key Lock 0.65 Cubic Feet , black

HD4100 Fireproof Safe and Waterproof Safe with Key Lock 0.65 Cubic Feet , black

Product ID: 258454460

Details

Brand
SentrySafe
Product Dimensions
34.3D x 39.4W
Lock Type
Electronic Key
Colour
Black
Capacity
0.65 Cubic
Special Feature
Fire Resistant

💧Waterproof 72-hour submersion

🔑Secure key lock with 2 keys

🔥UL fire endurance 1550ºF/30min

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Description

🔥 Lock in safety, unlock peace of mind 🔑

KEY LOCK SECURITY - Privacy key lock prevents unauthorized access and ensures the safe stays sealed during emergencies.
SPACIOUS ORGANIZED - Holds up to 40 letter-size hanging folders with built-in straps for passports and valuables—file like a pro.
UNMATCHED FIRE ENDURANCE - UL & ETL certified to withstand 1550ºF for 30 minutes, safeguarding your most critical documents and digital media.
FLOOD PROOF PEACE OF MIND - ETL verified waterproof protection keeps contents safe even after 72 hours underwater—because disasters don’t wait.
AFTER FIRE REPLACEMENT GUARANTEE - SentrySafe has your back with a replacement promise if fire damages your safe—bounce back faster.

The SentrySafe HD4100 is a robust 0.65 cubic feet fireproof and waterproof safe, UL and ETL certified to protect documents, digital media, and valuables from extreme heat (up to 1550ºF for 30 minutes) and water submersion (up to 72 hours). Featuring a secure key lock, spacious interior for hanging files, and an after-fire replacement guarantee, it’s the ultimate safeguard for home or office essentials.

Specifications

ASIN	B00GE57DFK
Additional Features	Fire Resistant
Alarm	Visual
Best Sellers Rank	#376,303 in Home Improvement ( See Top 100 in Home Improvement ) #722 in Home Safes & Safe Accessories
Brand	SentrySafe
Brand Name	SentrySafe
Capacity	0.65 Cubic Feet
Chamber Depth	8.1 Inches
Chamber Height	11.5 Inches
Chamber Width	12 Inches
Colour	Black
Control Type	Key Control
Country of Publication	USA
Customer Reviews	4.5 out of 5 stars 14,137 Reviews
Included Components	Privacy Key Lock, Sentrysafe Hd4100Cg Fire-Safe Waterproof File, Warranty
Item Dimensions D x W x H	34.3D x 39.4W x 36.3H Centimeters
Item Type Name	Fireproof Safe and Waterproof Safe
Item Weight	38.85 Pounds
Lock Type	Key
Manufacturer	SentrySafe
Manufacturer Part Number	HD4100
Material	Captured Fire Insulation
Material Type	Captured Fire Insulation
Model Number	HD4100
Mounting Type	Floor Mount
Product Dimensions	34.3D x 39.4W x 36.3H Centimeters
UPC	049074021450
Unit Count	1.0 Count
Water Resistance Level	Waterproof

Reviews

O**O

7.11.2023

C**N

7.11.2024

R**Y

15.02.2026

W**O

14.02.2025

R**Y

16.05.2025

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