21 A-size Door Horizontal Mailbox Unit (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H140021FL

Product Code: H140021FL
Availability: Ships in Approx. 2-weeks plus transit time (Manufactured to order) Lead times do fluctuate
Free Shipping until 02/29/24!
(2 customer reviews)

Wholesale Pricing $1,708.50

Lowest Price Guaranteed
Volume Discount Pricing:
For quantities of 5 or more - Request Quote or Call 800-676-5161

Available Options

Volume Discount (per Item) *

Select Door Identification *

Select Use *

Add to Compare


High-quality Commercial Standard Horizontal Mailboxes Made in the USA

Wholesale PricesThe Front Loading (FL) Horizontal Wall Mount Mailboxes from National Mailboxes are a great indoor solution for apartment complexes or university housing. They have been the standard for decades and can be used to replace damaged or worn out Standard Horizontal mailbox installations. Our Horizontal Mailboxes are high quality, very secure, and made from heavy duty aluminum for lasting durability. They are USPS approved but can also be used for private party access and distribution.

Unit Size: 21″W x 39″H x 17″D
Doors: 20 usable “A” size doors
Door Size: 5″H x 6-3/8″W
Colors: Standard color is Anodized Aluminum/Silver.

Product Features:

  • Each compartment measures 15″ deep
  • All tenant locks and keys are included
  • These mailboxes are wall mount recessed style units
  • Recommended minimum wall opening depth is 17″
  • USPS Approved for Replacement Only (Replacement of Existing Horizontal Mailboxes)
  • Local Post Office Approval Required
  • Can also be used for Private Party Access/Distribution
  • Clear plastic name/number window slot for tenant identification
Related Top Selling Commercial Mailboxes:
Similar Freestanding 4C Depot Cabinet Enclosures for 4C Horizontal Mailbox Units:
Multi-Unit Mailboxes FAQs:

2 reviews for 21 A-size Door Horizontal Mailbox Unit (Wall Mount) Front Loading (USPS Approved for Replacement Only) – H140021FL

  1. Gail J. (from Mountain Sun Apartments) (store manager)

    Great customer service, quality mailboxes, prompt delivery and received in great condition.

  2. Susan

    This mail box was a direct drop in for the old mail boxes – no retrofit on the mail center was required at all. I really love having the option of the engraved doors. The old mail boxes that I am replacing had some numbers missing – it’s just so much nicer to walk by with residents and prospects and see no problems. The company is awesome to work with!!

Add a review