The STI-1283 Backplate is a durable polycarbonate backplate designed for STI-1210C, STI-1210D, STI-1221C, and STI-1221D models. It is recommended for use on unstable or uneven surfaces and in weather applications. This backplate is for use with “C” and “D” back boxes.
Manufacturer Resources
Product Specs
- Back Box Compatibility:
- "C" and "D" back boxes
- Compatible Models:
- STI-1210C, STI-1210D, STI-1221C, STI-1221D
- Product Category:
- Parts & Accessories
- Recommended Use:
- Unstable or uneven surfaces and weather applications
- Compatible Model:
- STI-1210C, STI-1210D, STI-1221C, STI-1221D
- Product Group:
- Safety
- Product Subgroup:
- Parts & Accessories
- Product Type:
- -1283 Backplate for -1210C, -1210D, -1221C, and -1221D
- Series:
- Stopper II®
- Product Details:
- Backplate
- Department:
- Safety
- Product Material:
- Polycarbonate
Safety Technology International STI-1283 – Frequently Asked Questions
1) Which STI Stopper II covers does the STI-1283 backplate fit?
The STI-1283 backplate is made for the STI-1210C, STI-1210D, STI-1221C and STI-1221D. It mounts behind the unit and works with the "C" and "D" back boxes. If your Stopper II cover is a different model or uses a different back box, this backplate is not the right part.
2) Do I need a backplate when mounting a Stopper II on brick, block or textured siding?
That is exactly the case the STI-1283 is meant for. It is recommended on unstable or uneven surfaces, where the back box would otherwise sit on high spots and flex or rock. The plate spreads the mounting across a flat surface so the box seats properly.
3) Is the STI-1283 a cover or just the mounting plate?
It is the backplate only, not a complete Stopper II unit. You still need the cover and back box (STI-1210C, 1210D, 1221C or 1221D) for a working installation; the 1283 is the polycarbonate plate that goes between the back box and the wall.
4) Can the STI-1283 backplate be used outdoors?
Yes. The backplate is recommended for weather applications as well as uneven surfaces, and it is molded from polycarbonate, so exterior mounting of a compatible Stopper II back box is within its intended use.
5) I am standardizing pull station covers across a building. Can I order one backplate that works with every Stopper II back box?
No single backplate covers the whole line. The STI-1283 is specific to the "C" and "D" back boxes used on the STI-1210C, STI-1210D, STI-1221C and STI-1221D. Sort your openings by which back box is behind each cover, then order 1283 plates for the C and D units.
6) What is the STI-1283 backplate made of?
Polycarbonate, the same family of material used for Stopper II covers. That matters for the exterior and uneven-surface applications it is recommended for, since it will not rust or corrode behind the box.
How fast can I get the Safety Technology International STI-1283 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Safety Technology International STI-1283 come with a warranty?
Absolutely. The Safety Technology International STI-1283 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Safety Technology International STI-1283?
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