SKU: 64000757519

Salsbury 3700 Horizontal Series Recessed-Mount Mailbox with 3 Parcel Lockers

$1087.23 $1208.03
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

Salsbury 3700 Horizontal Series Recessed-Mount Mailbox with 3 Parcel Lockers3700 Series Recessed 4C Mailbox, 3 Parcel Lockers USPS approved recessed 4C horizontal mailbox constructed from heavy duty aluminum with stainless steel hardware. Designed for apartments and commercial buildings, this maximum height double column unit features 15 tenant doors plus three integrated parcel lockers and an outgoing mail compartment. Key Features: USPS 4C Compliance: Approved front loading unit with carrier access door for USPS master lock

3700 Series Recessed 4C Mailbox, 3 Parcel Lockers

USPS-approved recessed 4C horizontal mailbox constructed from heavy-duty aluminum with stainless steel hardware. Designed for apartments and commercial buildings, this maximum-height double-column unit features 15 tenant doors plus three integrated parcel lockers and an outgoing mail compartment.

Key Features:

  • USPS 4C Compliance: Approved front-loading unit with carrier access door for USPS master lock
  • Durable Construction: Heavy-duty aluminum body with stainless steel hardware and powder-coated finish
  • Secure Access: Heavy-duty cam locks with anti-fish plate on outgoing mail slot
  • Integrated Parcel Lockers: Three fully integrated lockers to meet required 1:5 parcel ratio
  • Flexible Installation: Recessed mount design; connector kit supports multi-unit installations

Please check the Product Data Sheet Here

Specifications Table:

Specification Details
Series Salsbury 3700 Series 4C Horizontal Mailboxes
Mounting Recessed mount
Loading Front loading with USPS access
Configuration Double column; 15 tenant doors; 3 parcel lockers; outgoing mail compartment
Overall Dimensions 31.125" W x 57.125" H x 16.5" D
Weight 165 lbs
Construction Heavy-duty aluminum with stainless steel hardware
Finish Options Powder coated in aluminum, bronze, gold, or sandstone
Lock Type Heavy-duty cam locks; carrier access door for USPS master arrow lock
Security Features Anti-fish plate on rear of mail slot
Door Sizes MB1 3-1/4" H x 13-1/4" W; MB2 6-3/4" H x 13-1/4" W; MB3 10-1/4" H x 13-1/4" W; MB4 13-3/4" H x 13-1/4" W; parcel lockers available PL3, PL4, PL4.5, PL5, PL6
Compliance USPS-STD-4C; ADA height compliant units available
Outgoing Mail Slot 10-3/4" W x 3/4" H with weather protection hood
Included Trim Factory installed 3/4" W x 1/4" D trim and solid rear cover
Connector Kit Includes 4C horizontal mailbox connector kit to connect multiple units

Frequently Asked Questions (FAQ):

Q: How many tenant compartments and parcel lockers are included?
A: This double-column unit provides 15 tenant mail doors and 3 integrated parcel lockers, plus an outgoing mail compartment.

Q: Is this mailbox compliant with USPS 4C standards?
A: Yes, it is manufactured to USPS-STD-4C specifications and includes a carrier access door for the USPS-provided master arrow lock.

Q: Can it be installed outdoors?
A: Yes. It is suitable for indoor or outdoor use when recessed-mounted into a wall per manufacturer guidelines.

Q: What are the overall dimensions?
A: Approximately 31.125 in W x 57.125 in H x 16.5 in D.

Q: What finishes are available?
A: Powder-coated finishes include aluminum, bronze, gold, and sandstone; this listing shows the aluminum finish.

Streamlined, Secure, and Architecturally Clean

This recessed 4C mailbox brings a crisp, modern cadence to multi-tenant entries, with a balanced double-column layout that feels intentional and refined. The aluminum face and neatly numbered doors create a graphic rhythm—elevating utility into design. Pair it with a monochrome wall panel or textured stone surround to let the sleek hardware shine. It’s a polished essential for sophisticated, high-traffic spaces.

Upgrade your building’s mailroom with this USPS-approved, secure 4C unit—order today for streamlined delivery and tenant convenience.

Installation

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 64000757519

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4.4 ★★★★★
Based on 27 reviews
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Product Reviews
K
Verified Purchase
K. Beyer
Houston, US
★★★★★ 5
Very nice
Pretty good idea and great design. I couldnt belive it.. The price was reasonable and i thought its probably just a clicking clock type thing, so my hopes werent really up, but i figured i would give it a try, i was so amazed when i turned it on. It actually feels like the gentle thump of the heart beat. No clicking like a clock or anything you can imagine up. Im very impressed. My dog is adjusting to being blind so she wakes up scared and confused and cries till I can get to her and reassure her. I put this in her blanket with an small hand warmer and it has had a calming effect for her. She can feel the heart beat vibrate through her blanket and pillow and the low warmth of the hand warmer is comforting. The charge makes it through the night so if I go to the kitchen or do a chore she is comforted when I'm not close at hand. I'm ordering a second one so I can alternate them, one charging while one is in use. I can put this in her stroller and should I need to charge it it works off of the phone charger in my car or even the extra chargers we have available every where. Very well made, nothing that could break off and be swallowed by accident. Nothing that could stick her or injure her at all. Smooth to touch, button is level ,no way to dig it out or chew it loose. Nice to receive a well designed product that I can trust is safe for my babis. Cause yes.... we want the best for our pets. I give this my highest recommendation. If they had a number higher than 5. This little gem would deserve it. Only the best my jenny. 2nd purchase addendum: Awesome!!!!! I decide to give this gem a real work out. I charged it up and put it in Jenny's blanket and let it run.... 36 hours later it was still going strong. You can feel the lub dub heart beat on top, a foot away and 2 feet away. Jenny sleeps in bed with me so I felt all around it and could feel it through the blanket and into her pillow. Sometime she lays on top of it, sometimes she is beside it but she is always within it's range. I removed it to charge and she searched for it and couldn't settle and calm. So I ordered a second one. One is charging while the other is in use, i could feel the gentle heart beat through the mattress. It's not annoying, just a soothing heart beat she finds comfort with. I can place it in her carriage or in her travel carrier in the car. Fits in the palm of your hand, not bulky or uncomfortable. It lights up when it is charging and goes dark when the charge is complete. I took it with her when she went to the baby sitter (usually she is always with me) and she was comfortable the short time I was gone. Wouldn't be without this gem. It is well made and safe i give it a 10. Best thing you can get for your babis. You won't be disappointed. ❤️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 3, 2024
Z
Verified Purchase
Z_Meggers
Birmingham, US
★★★★★ 5
Good product.
Works well. Holds a good charge. Helped my puppy some. I put it in a blanket that smelled like her family. Seemed to help her sleep better than. Some puppies in the past. Durable when she does get her teeth on it. Also a good size.
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Reviewed in the United States on October 8, 2025
A
Verified Purchase
Alan
Los Angeles, US
★★★★★ 5
I use it for myself not my pet
I sewed a fluffy velcro pouch to put this in, and then I wrapped the pouch around a microwavable heat gel pack in order to get the sensation of both heat and heartbeat while hugging a large stuffed animal. It works great. It's not too loud if you position it right. It helps me to fall asleep and not feel lonely or touch starved. The battery lasts a long time and I don't have to recharge it very often. I only wish that the speed of the heartbeat was adjustable so that I could slow it down a little more so that my own heartbeat might try to match it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2024
M
Verified Purchase
Mary S.
Port Orchard, US
★★★★★ 1
Easily Exposed Lithium Ion Battery
I am returning this item for my money back. Apparently, they think they can charge $16 for a piece of plastic and not even put a screw on the back to hold the panel closed. My dog is smart and a little rough when anxious. I wanted a rechargeable heart (to avoid buying batteries) to help with this anxiety but cannot risk the Velcro coming undone and him biting the heart by mistake. The panel slides off very easily. There's a reason that lithium ion batteries aren't usually easily accessible. I'm not risking my dog discovering a battery and wire in the heart. Even with appropriate supervision, accidents happen. I don't even understand why I would need to access the battery when it's rechargeable. I don't recommend purchasing this product for that reason alone.
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Reviewed in the United States on July 17, 2022
M
Verified Purchase
Marilyn
Waukegan, US
★★★★★ 4
Works great!
It works great, don't have to buy batteries. 07/-8/25 Marilyn A.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 9, 2025

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