Gardall SL4000F Heavy Duty Wall Safe

U.L. Group II lock, 1/4-inch steel door: concealed wall security

For homeowners who want valuables hidden in plain sight, the Gardall SL4000F Heavy Duty Wall Safe recesses between standard 16-inch wall studs and disappears behind a picture or mirror. Hand-built in Syracuse, USA, it pairs a 1/4-inch plate steel door with a 1/8-inch steel body and a U.L. Group II mechanical lock for everyday eye-level access to documents and small valuables.

Sized to fit a 4-inch wall depth, the SL4000F measures 12.38 inches high, 14.38 inches wide, and 4 inches deep on the exterior, with a 12 by 14 by 2.75-inch interior and one removable shelf. At roughly 41 pounds, it installs through pre-drilled anchor holes, and its 1-inch flange covers the cut so no plastering or repainting is needed around the safe.

Engineering & Security

• ✓1/4-inch plate steel door: A solid quarter-inch steel door resists prying and forced entry far better than the thin sheet doors found on big-box wall units.
• ✓1/8-inch all-steel body: Welded eighth-inch steel walls form the enclosure, giving the SL4000F real heft and rigidity for a recessed in-wall installation.
• ✓U.L. Group II mechanical lock: Comes standard with a Underwriters Laboratories Group II rated combination dial; a U.L. Group II electronic lock with removable keypad is available as an option.
• ✓Not fire-rated by design: This is a steel security wall safe with no fire insulation, so store fire-sensitive documents in a separate fire-rated safe.

Concealment & Installation

• ✓Fits 16-inch on-center studs: Designed to slip between standard 16-inch wall studs at a 4-inch depth, concealing the safe inside the wall cavity.
• ✓1-inch finishing flange: Built-in flange extends past the cut opening so the wall needs no plastering or repainting around the installed safe.
• ✓Removable interior shelf: One removable shelf organizes jewelry, cash, and documents at eye level, and lifts out when you need full-height space.

Ideal Buyer & Use Cases

The Gardall SL4000F suits homeowners and small-business owners who want a discreet, USA-built wall safe for documents, jewelry, and cash concealed behind a picture or mirror. At 12.38 inches high, 14.38 inches wide, 4 inches deep, and about 41 pounds, it fits cleanly in a standard 4-inch stud wall.

If you need more interior room in a deeper wall, the Gardall SL6000F Heavy Duty Wall Safe steps up to a 6-inch depth. Buyers on a tighter budget can consider the economical Gardall IW1314-T-E or IW1317-T-E wall safes, while the flanged WMS911-G-E offers an alternate concealed-wall option.