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American Security Cabinets

Through-Wall Book/Media Library Return (HSU) Interior

This Through-Wall Book/Media Library Return is low-maintenance, made of brushed stainless steel, and is designed to collect books and media safely, securely, and efficiently. The head and chute is designed for wall depths up to 24”.

Head and sleeve come standard for wall depths up to 2.5”. For additional chute options, please select one of the bundles in the ‘Wall Depth’ tab.

  • View the Specifications for this drop box here.
  • View the installation/cut sheet for this product here.
  • This head/sleeve or head/chute comes with: 2 sets of keys.
  • Step 1:
    * Wall Depth
    Step 2:
    Select Accessories
    Chute Bundles *
    *Enter wall depth in inches (1 - 12 inches)
    *Enter wall depth in inches (13 - 20 inches)

    (If wall is deeper than 20", please Contact Sales to order.)

    Additional Keys:
    • $29.00
SKU NS 5121-0 Category
Weight 8 lbs
Dimensions 13 × 13 × 15 in
Head Option

Head and Chute (Up to 24"), Head and Sleeve (Up to 2.5")

Product Dimensions

Opening 3-3/4" x 12-1/2"
Overall Dimensions 10-5/16" x 18-3/4"


Tamper Resistant Chute


ADA Title II and Title III compliant


Chute, Custom Signage, Head

Cabinet Size

Extra Large, Large, Medium, Small

Material Finish

Stainless Steel

Mounting Option



Book Return, Interior Returns, Media Return

Slot size

Large, Standard

Items Shipping via a Common Freight Carrier:

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Items Shipping via a UPS Ground Delivery:

SKU NS 5121-0 Category