2 published options covered. This is a selected shortlist, not every provider in the market. Research method and limits.
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Option
Published route
Before committing
Metal Image
Publishes fabrication, supply and installation of mailboxes/letterboxes among its metalwork services.
Confirm accepted quantity, exact design/finish, mounting, locks, removal, installation, access and complete quote. No SingPost/HDB approval or minimum-order assumption.
Prefab Technology 3
Publishes aluminium/stainless-steel letterbox systems with design and finishing choices.
Confirm quantity, dimensions, material/finish, lead time, delivery and which party installs/removes it. Product listings do not independently establish approval or installation inclusion; no unauthorised access guidance.
Choose by what you need
Define whether the building needs a complete letterbox bank or an individual part, and establish who can authorise the work. Metal Image publishes fabrication, supply and installation of letterboxes. Prefab Technology 3 publishes aluminium/stainless-steel systems with several designs and finishes. A product manufacturer is not automatically confirmed as the installer for every order. Ask what is supplied, who removes and installs the system, and who checks the applicable building specifications. IMDA publishes a reference for letterbox specifications; it does not establish approval of either selected supplier or a particular quotation. This guide is for a managed replacement project, not opening mailboxes or bypassing locks.
Shortlisted options
These options are listed alphabetically. Compare the selected offer and terms before committing; inclusion is not a quality ranking.
Publishes aluminium/stainless-steel letterbox systems with design and finishing choices.
Why consider it: The selected system and finish can be specified before procurement.
May suit: Authorised owners/managers comparing a letterbox system.
Before deciding: Confirm quantity, dimensions, material/finish, lead time, delivery and which party installs/removes it. Product listings do not independently establish approval or installation inclusion; no unauthorised access guidance.
Who authorises the complete replacement and what quantity is needed?
What exact system, dimensions, finish and locks are specified?
Who checks applicable specifications and handles removal/installation?
What access, delivery, lead time, full quote and warranty are agreed?
How this comparison was researched
We read the linked operator, product and responsible public-body pages on the research date. We did not visit, test, buy products or commission work. This compares published scope and selected terms, not workmanship, safety certification or health outcomes. Confirm the actual site, chosen product, current availability, complete price and accepted contract directly.
How this guide was researched
Options are listed alphabetically, not ranked. No business paid for editorial inclusion. Known Tendou client relationships are disclosed. Confirm the selected product, visit or contract directly.
Sources
Home - Metal Image | Letterbox, LTA Railings, Flag & CCTV Poles Manufacturing, Installation and Fabrication in Singapore (Official operator, responsible venue or public-body page, checked 2026-10-25): https://www.metalimage.com.sg/