Through-the-Door Steel Mail Drop Box with Combination Lock
Through-the-Door Steel Mail Drop Box with Combination Lock
SucceBuy Through-the-Door Mail Drop Box — Secure, Weatherproof & Easy to Install
Keep your mail, keys, parcels, and important documents safe with the SucceBuy Heavy Duty Steel Through-the-Door Mail Drop Box. Built from thick, powder-coated steel and fitted with a resettable 12-digit combination lock, this wall-mounted drop box offers dependable security for homes, offices, schools, and rental properties — without ever needing a key.
Made in Mainland China.
Why You'll Love It
- Rainproof Flap Design: A large protective flap covers the front delivery slot, shielding your mail from rain and bad weather. Rubber pads and drainage holes at the bottom quickly channel away any water, keeping contents dry at all times.
- Generous Slot & Storage Space: The wide 1.9 × 10.2 inch (48 × 258 mm) slot easily accepts envelopes, smartphones, small parcels, keys, remote controls, and rental checks. The spacious 12 × 6.1 × 14.1 inch (0.59 cu ft) interior accommodates a high volume of deliveries.
- Heavy-Duty Steel Construction: Crafted from thick steel plate and finished with a rust-resistant, scratch-resistant powder coating, this mail drop box is built to last through years of daily use while maintaining a sharp, professional look.
- Keyless Combination Lock: The resettable combination lock means no more lost keys. Set or change your code at any time for hassle-free access. Internal metal baffles prevent tampering or "fishing" for mail, adding an extra layer of security.
- Built-In Viewing Window: A 2 × 4 inch (50 × 100 mm) transparent window lets you check at a glance whether mail has arrived — no need to open the box.
- Universal Door Compatibility: Designed for doors up to 1.7 inches (43 mm) thick, fitting most standard residential and commercial doors. Includes all hardware and clear step-by-step instructions for a straightforward installation.
- Versatile Use: Perfect for homes, apartments, offices, workplaces, and schools — anywhere secure, convenient mail collection is needed.
Product Specifications
| Material | Heavy-Duty Steel Plate with Powder Coating |
| Color | Black |
| Storage Box Size | 12 × 6.1 × 14.1 inches (0.59 cu ft) |
| Slot Size | 1.9 × 10.2 inches (48 × 258 mm) |
| Viewing Window | 2 × 4 inches (50 × 100 mm) |
| Door Thickness Compatibility | 1.7 inches / 43 mm |
| Product Weight | 3.94 kg (approx. 8.7 lbs) |
| Lock Type | Resettable Combination Lock |
| Country of Origin | Mainland China |
Installation Overview
- Mark and cut the installation opening in your door or wall.
- Mount the delivery slot flap on the exterior face of the door.
- Insert and secure the mailbox body from the interior side.
- Reset the combination code to your preferred number.
- Your drop box is ready to use immediately!
For guidance on home security best practices, visit the U.S. Consumer Product Safety Commission (CPSC) for consumer product safety resources.
Frequently Asked Questions
Q: What door thickness is this through-the-door mail drop box compatible with?
A: The SucceBuy mail drop box is designed for doors with a thickness of 1.7 inches (43 mm), which covers most standard residential and commercial doors. Please measure your door thickness before purchasing to confirm compatibility.
Q: Can I change the combination lock code after setting it up?
A: Yes! The resettable combination lock allows you to change the access code at any time, making it ideal for rental properties, shared offices, or any situation where access needs to be updated regularly — no locksmith needed.
Q: Is the mail drop box weatherproof for outdoor or door-mounted use?
A: Absolutely. The box features a large rainproof flap over the delivery slot, a powder-coated rust-resistant steel body, rubber base pads, and integrated drainage holes to prevent water accumulation. It is designed to protect your mail in wet and variable weather conditions.
Q: How large are the items I can drop through the slot?
A: The slot measures 1.9 × 10.2 inches (48 × 258 mm), accommodating standard envelopes, slim parcels, keys, remote controls, and smartphones. The interior storage compartment (12 × 6.1 × 14.1 inches) provides ample space for accumulated deliveries.
Q: Is this drop box suitable for commercial or office use?
A: Yes. The SucceBuy drop box is well-suited for offices, schools, rental properties, and commercial buildings. Its keyless combination lock, anti-fishing metal baffles, and robust steel construction make it a smart, professional-grade solution for any setting.