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Clear polycarbonate open-back cover, flush-mount rectangular frame, 6.5 by 8.5 by 4 inches

Safety Technology International

Safety Technology International STI-1221E Open Backbox Flush Mount Home Safety

SKU CH-D02Z-Y97WM

A clear polycarbonate cover protects indoor strobe units, flush-mounting in a 6.5 by 8.5 by 4 inch open backbox with included hardware and operating from -40 to 250 degrees F

  • Product typeOpen Backbox, Flush Mount
  • Protects strobe units with durable polycarbonate cover
  • Flush-mount design fits cleanly into wall openings
  • Operates reliably from -40 to 250 degrees Fahrenheit
  • Meets ADA, UL/cUL and MEA 49-00-E standards
  • Includes mounting hardware for straightforward installation

Protective Polycarbonate Cover

The STI-1221E is an open-back flush-mount backbox designed to shield indoor strobe units from damage. Its clear polycarbonate construction maintains device visibility while providing a durable barrier against accidental impact. The unit includes all necessary mounting hardware for a secure installation. It serves facilities needing reliable protection for life-safety notification appliances.

Replaces Exposed Strobe Mounting

This backbox upgrades installations where strobe units are currently surface-mounted without a protective enclosure. The jump is worth it when devices are located in hallways, gyms, or other high-traffic areas prone to physical contact. It brings the installation into alignment with ADA compliance requirements and meets MEA 49-00-E and UL/cUL listing standards. The flush design sits neatly within the wall cavity for a lower profile.

Handles Indoor Environmental Range

The polycarbonate cover comfortably handles operating temperatures from -40 to 250 degrees Fahrenheit, making it suitable for unconditioned indoor spaces. It fits strobe units within the 6.5 by 8.5 by 4 inch dimensional envelope. The open-back design allows for standard electrical box access but offers no protection against water ingress for outdoor or wash-down environments.

How it compares

Measured against everything we stock in Home Protection & Access Devices, at today’s prices. Recalculated every night.

Price $31.99
Cheaper than about 74% of the 1,270 comparable items (median $64.99).

Specifications

Product
Brand nameSafety Technology International
Model nameSTI-1221E
Product typeOpen Backbox, Flush Mount

Questions about this item

What size wall opening does the 6.5 x 8.5 inch open backbox require?

The flush-mount backbox fits a cut-out matching its 6.5-inch width and 8.5-inch height; the 4-inch depth sits inside the cavity once the opening is prepared.

Which mounting hardware is included and how is the cover secured?

The package supplies the mounting hardware; fasten the polycarbonate cover to the backbox using the provided screws so the tamper-resistant seal engages fully.

Will the polycarbonate cover need replacement after long exposure to the rated temperature range?

The cover is rated for -40 to 250 degrees F and meets UL/cUL and ADA standards; inspect annually for UV yellowing or impact cracks and replace only if damaged.

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