Learn More About Door and Wall Mail Slots

Mail slots provide a simple way to receive letters, envelopes and documents through doors, walls or partitions.

For door installation, mail slots are commonly used on front doors, office doors, apartment doors and private room doors.

For wall or partition installation, through wall mail slots can be used in reception areas, offices, service counters and controlled delivery points. 

We support standard mail slot models and custom production, including size, material, finish, flap design, mounting holes, logo and packaging.

Brushed metal mail slot installed through an office partition for letters envelopes and document delivery
Through wall commercial drop chute with stainless front panel upper drop door lower window and rear angled chute

Custom Through The Wall Commercial Drop Chute

Mail Slot Solutions for Different Applications

Mail slots can be used in office, multifamily, retail, university, hospitality and architect-led projects.

Metal mail slot installed on an office door for reception rooms private rooms and internal document delivery

Office

Mail slots for office doors, reception rooms, private rooms and internal document delivery.

Inquiry Now
Durable mail slot installed in a shared apartment entrance for multi-unit residential mail delivery

Multifamily

Mail slots for apartments, shared entrances and multi-unit residential projects.

Inquiry Now
Pass-through mail slot mounted in a retail service counter partition for forms envelopes and document handover

Retail

Pass-through mail slots for shops, service counters, back offices and document handover areas.

Inquiry Now
Robust metal mail slot installed in a campus office hallway for administration rooms dormitories and internal mail points

University

Durable mail slots for campus offices, dormitories, administration rooms and internal mail points.

Inquiry Now
Clean-finish mail slot integrated into a hotel or serviced apartment staff office door

Hospitality

Clean-finish mail slots for hotels, serviced apartments, guest areas and staff office doors.

Inquiry Now
Flush custom mail slot installed in a modern architectural wall panel with matched metal finishes

Architect

Custom mail slots for design-led projects that require special sizes, flush installation or matched finishes.

Inquiry Now

Typical Mail Slot Specifications for Custom Projects

Standard and custom mail slot specifications can be adjusted according to door type, wall thickness and project requirements.

ItemCommon Options
Product TypeDoor mail slots, through wall mail slots, built-in mail slots, surface mounted mail slots
MaterialStainless steel, aluminum, steel, zinc alloy
FinishBrushed, polished, matte black, powder coated, anodized, custom color
InstallationDoor mounted, wall mounted, pass-through, built-in, surface mounted
Flap StyleSingle flap, double flap, spring flap, covered flap
ApplicationOffice, multifamily, retail, university, hospitality, architect projects
Custom OptionsSize, opening, finish, logo, packaging, mounting holes
Order TypeStandard model, OEM order, project order, distributor order
 
Custom mail slot prototypes with different lengths flaps finishes mounting holes and OEM packaging options

Custom Mail Slot Size and OEM Support

Custom mail slots can be developed according to your door structure, wall thickness, installation method and brand requirements.

We can adjust the front plate size, slot opening, flap structure, screw hole position, inner trim, surface finish and packaging. For project orders, mail slots can also be matched with door color, entrance design or existing hardware style.

OEM support is available for brands, distributors, builders and contractors who need stable repeat supply. Custom logo, labels, cartons and packaging can be arranged based on your order requirements.

Why Choose us as your Parcel Boxes Supplier in China?

We focus on stable quality, clear customization, and practical support for long-term cooperation.

Manufacturer Direct Support

Work directly with the production side to reduce communication gaps, unclear details, and unnecessary delays. From material selection to packing requirements, we help confirm the key points before production starts.

Custom Options for Your Market

Different customers need different sizes, finishes, colors, logos, packaging, and installation methods. We support OEM and private-label customization to help you build product lines that match your target market.

Consistent Quality Control

For repeated orders, consistency matters more than one perfect sample. We check appearance, structure, dimensions, surface finish, and packing details to help each batch stay close to the approved standard.

Practical Export Experience

International orders need more than production. We understand packaging protection, order communication, and shipment preparation, helping wholesalers, brand owners, and project buyers receive goods with fewer problems.

Production Process

production process welding assembly
production process lock installation
production process metal bending
production process workplae
production process powder coating
production process metal cutting

Certification Show

secure parcel box certificate vertical
quality management certificate vertical
packaging shipment certificate vertical
outdoor durability certificate vertical
oem odm manufacturing certificate vertical
metal fabrication certificate vertical

R & D Team

Engineers reviewing custom parcel box and letterbox prototypes with drawings calipers finish samples and hardware on a factory workbench

R&D Team Custom Mailbox Design Review

Engineers discussing custom mailbox parcel box mail slot and house number samples with finish swatches and measurement tools

R&D Team Engineering Collaboration for Mail Products

Engineer testing lock latch hinge and mail slot hardware details for custom parcel boxes mailboxes and letterboxes

R&D Team Lock and Hardware Testing

Engineering team comparing powder coated panels brushed metal samples house numbers and parcel box parts for custom mail products

R&D Team Material and Finish Review

Technicians checking parcel box sample packaging foam inserts accessories and drawings for OEM export order development

R&D Team Packaging Validation for Parcel Boxes

Engineers testing parcel box door structure hinge alignment and assembly details with drawings tools and sample parts

R&D Team Parcel Box Prototype Structure Testing

FAQ

Mail slots are used to receive letters, envelopes and documents through doors, walls or partitions.

Yes. Through wall mail slots can be designed for walls, partitions, reception counters and pass-through delivery points.

Yes. We can customize the length, width, opening size, flap style, mounting holes and surface finish.

Common options include stainless steel, aluminum, steel and powder-coated metal.

Yes. Office mail slots are suitable for private rooms, reception areas, document rooms and internal mail delivery.

Yes. Surface mounted mail slots can be installed on existing doors, walls or panels when recessed installation is not required.

Contact Form