4B+ Horizontal Mailboxes
Designed for retrofits and replacement projects, our 4B+ Horizontal Mailboxes meet USPS regulations for specific installations in older buildings. Ideal for indoor use in multi-unit residential or commercial properties, these mailboxes offer secure, centralized mail delivery with a compact, wall-mounted design.
Sweatfully is an authorized dealer for all the brands we carry, so you can shop with confidence knowing you're getting genuine, high-quality products backed by full manufacturer warranties and expert support.
Salsbury Replacement Door and Lock - Standard A Size - for 4B+ Horizontal Mailbox - with (2) Keys - Sandstone
Salsbury Industries MailboxesReplacement Door and Lock - Standard A Size - for 4B+ Horizontal Mailbox - with (2) Keys - SandstoneUsually Ships Within 1-2 Days
Salsbury Replacement Door and Lock - Standard A Size - for 4B+ Horizontal Mailbox - with (2) Keys - Bronze
Salsbury Industries MailboxesReplacement Door and Lock - Standard A Size - for 4B+ Horizontal Mailbox - with (2) Keys - BronzeUsually Ships Within 1-2 Days
Salsbury Key Blanks - for Standard Locks of 4B+ Horizontal Mailboxes - Box of (50)
Salsbury Industries MailboxesKey Blanks - for Standard Locks of 4B+ Horizontal Mailboxes - Box of (50)Usually Ships Within 1-2 Days
Salsbury Combination Lock - for 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCombination Lock - for 4B+ Horizontal Mailbox DoorUsually Ships Within 1-2 Days
Salsbury Master Commercial Lock - for Private Access of FL 4B+ Horizontal Mailbox and Parcel Locker - with (2) Keys
Salsbury Industries MailboxesMaster Commercial Lock - for Private Access of FL 4B+ Horizontal Mailbox and Parcel Locker - with (2) KeysUsually Ships Within 1-2 Days
Numbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 101-200 Series
Salsbury Industries MailboxesNumbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 101-200 SeriesUsually Ships Within 1-2 Days
Numbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 401 to 500 Series
Salsbury Industries MailboxesNumbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 401 to 500 SeriesUsually Ships Within 1-2 Days
Numbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 301 to 400 Series
Salsbury Industries MailboxesNumbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 301 to 400 SeriesUsually Ships Within 1-2 Days
Numbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 201 to 300 Series
Salsbury Industries MailboxesNumbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 201 to 300 SeriesUsually Ships Within 1-2 Days
Numbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 1 to 100 Series
Salsbury Industries MailboxesNumbers - Self Adhesive Sheet of (100) - for 4B+ Horizontal Mailboxes - 1 to 100 SeriesUsually Ships Within 1-2 Days
Resettable Combination Lock - for 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesResettable Combination Lock - for 4B+ Horizontal Mailbox DoorUsually Ships Within 1-2 Days
Master Control Key - for #3682 Resettable Combination Lock of 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesMaster Control Key - for #3682 Resettable Combination Lock of 4B+ Horizontal Mailbox DoorUsually Ships Within 1-2 Days
Salsbury Custom Lock Cylinder Installation - for 4B+ Horizontal Mailbox Door - Cylinder and Housing Provided By Owner
Salsbury Industries MailboxesCustom Lock Cylinder Installation - for 4B+ Horizontal Mailbox Door - Cylinder and Housing Provided By OwnerAllow 5-7 Days For Shipping
Salsbury Thumb Latch - for 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesThumb Latch - for 4B+ Horizontal Mailbox DoorUsually Ships Within 1-2 Days
Salsbury Custom Door Engraving - Regular - for Gold 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCustom Door Engraving - Regular - for Gold 4B+ Horizontal Mailbox DoorAllow 5-7 Days For Shipping
Salsbury Custom Door Engraving - Regular - for Sandstone 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCustom Door Engraving - Regular - for Sandstone 4B+ Horizontal Mailbox DoorAllow 5-7 Days For Shipping
Salsbury Custom Door Engraving - Regular - for Aluminum 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCustom Door Engraving - Regular - for Aluminum 4B+ Horizontal Mailbox DoorAllow 5-7 Days For Shipping
Salsbury Custom Door Engraving - Regular - for Bronze 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCustom Door Engraving - Regular - for Bronze 4B+ Horizontal Mailbox DoorAllow 5-7 Days For Shipping
Salsbury Custom Door Engraving - Black Filled - for Gold 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCustom Door Engraving - Black Filled - for Gold 4B+ Horizontal Mailbox DoorAllow 5-7 Days For Shipping
Salsbury Custom Door Engraving - Black Filled - for Bronze 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCustom Door Engraving - Black Filled - for Bronze 4B+ Horizontal Mailbox DoorAllow 5-7 Days For Shipping
Salsbury Custom Door Engraving - Black Filled - for Aluminum 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCustom Door Engraving - Black Filled - for Aluminum 4B+ Horizontal Mailbox DoorAllow 5-7 Days For Shipping
Salsbury Additional Key - for 4B+ Horizontal Mailbox Standard Lock
Salsbury Industries MailboxesAdditional Key - for 4B+ Horizontal Mailbox Standard LockUsually Ships Within 1-2 Days
Salsbury Plexiglass Window - for 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesPlexiglass Window - for 4B+ Horizontal Mailbox DoorAllow 5-7 Days For Shipping
Salsbury Card Holder - Clear Plastic - for 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCard Holder - Clear Plastic - for Cell Phone Storage Locker DoorUsually Ships Within 1-2 Days
Custom Engraved Self Adhesive Placard - for 4B+ Horizontal Mailbox Door
Salsbury Industries MailboxesCustom Engraved Self Adhesive Placard - for 4B+ Horizontal Mailbox DoorUsually Ships Within 1-2 Days