Installation Type
Custom Address Signs
Trash Bin Enclosure
Built-In Mail Slot Solutions
Built-in mail slots are suitable for projects where the mail opening needs to become part of the door, wall or entrance system.
Architectural
Flush mail slots for custom doors, wall panels and entrance systems requiring a clean integrated appearance.
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Multifamily
Built-in mail slots for apartment doors and shared residential entrances requiring durable, space-saving mail delivery.
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Hospitality
Integrated mail openings for serviced apartments, villas and hospitality properties requiring coordinated door hardware.
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Office
Built-in mail and document slots for office doors, reception walls and internal partitions.
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Built-in mail slot dimensions and components should be selected according to the prepared opening, installation thickness and required visible finish.
| Item | Common Options |
|---|---|
| Product Type | Built-in mail slot, recessed mail slot, flush mail slot |
| Material | Stainless steel, galvanized steel, aluminum, brass, zinc alloy |
| Front Plate | Standard or project-specific dimensions |
| Mail Opening | Standard or custom opening size |
| Installation | Recessed, flush mounted or screw-fixed built-in structure |
| Sleeve Depth | Fixed or project-specific depth |
| Flap Options | Single flap, double flap, spring flap, inner cover |
| Rear Side | Open rear, rear plate, trim frame or matching cover |
| Weather Control | Brush seal, inner flap or double-flap structure where applicable |
| Finish | Brushed, polished, matte black, bronze, powder coated |
| Mounting | Screw holes, brackets or project-specific fixing |
| Packaging | Bulk, individual box or OEM packaging |
Built-In Installation & Fit Options
Built-in installations require accurate coordination between the mail slot and the surrounding door, wall or panel.
Opening Size
Confirm the required cut-out width and height before production to ensure the mail slot fits the prepared opening.
Installation Depth
Sleeve depth can be selected according to the door, wall or panel thickness.
Front & Rear Plates
Front plates, rear trim frames and matching rear covers can be configured according to the visible surfaces on both sides.
Mounting Details
Screw holes, brackets and fixing positions can be adjusted according to the installation structure.
Case Study: Built-In Mail Slot for a Letterbox System
A mailbox brand needed a built-in mail slot that could be used as a repeatable component across one of its wall-mounted letterbox ranges.
Customer Requirements
- Accurate fit within the existing panel opening
- Smooth and stable flap operation
- Consistent black surface finish
- Protective packaging for assembly and transport
Our Solution
We reviewed the existing opening dimensions and flap structure, adjusted the component fit and improved the powder-coated finish.
The mail slots were individually protected during packing to reduce surface damage before final assembly.
Project Result
After sample approval, the built-in mail slot was adopted as a standard component for the customer’s letterbox product line.
Built-In Mail Slot Production Process
Production focuses on accurate openings, sleeve fit, smooth flap operation and consistent visible finishes.
Material Cutting
Mail slot plates, flaps and sleeve components are cut to the approved dimensions.
Forming & Machining
Openings, mounting holes and folded edges are formed for the required installation.
Sleeve & Component Joining
Sleeves, brackets and structural parts are joined according to the required depth and design.
Flap & Hardware Assembly
Flaps, springs, covers, brush seals and mounting parts are assembled and adjusted.
Surface Finishing
Brushing, polishing, powder coating or other specified finishes are applied.
Inspection & Packaging
Dimensions, sleeve depth, flap movement and surface quality are checked before packing.
FAQ
What is a built-in mail slot?
A built-in mail slot is a mail opening installed into a door, wall, gate, or mailbox panel so letters can pass through without using a separate external mailbox.
Can you make custom sizes?
Yes. We can make custom length, opening height, plate size, depth, screw holes, and flap structure based on your project.
What materials are available?
Common materials include stainless steel, galvanized steel, aluminum, and zinc alloy. The best choice depends on the installation location and finish requirement.
Can built-in mail slots fit different door or wall thicknesses?
Yes. Sleeve depth, plate dimensions and mounting details can be customized according to the installation thickness.
Can the mail slot be weatherproof?
We can add flap covers, brush seals, inner covers, or double-flap designs to help reduce rain, dust, and wind entry.
Do you support logo and packaging customization?
Yes. We can support custom logo, label, carton, individual packaging, and retail box packaging for bulk orders.
Can you provide both front and rear plates?
Yes. Front plates, rear covers, sleeves and related components can be supplied as a complete built-in mail slot set.
What is the difference between built-in and surface-mounted mail slots?
Built-in mail slots are recessed into a prepared opening, while surface-mounted mail slots attach mainly to the existing surface and generally require less recess depth.