Safety Technology Internationa...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$22.30
Safety Technology International STI 3100 Stopper II Conduit Spacer with Frame

Safety Technology International STI 3100 Stopper II Conduit Spacer with Frame

(No reviews yet) Write a Review

Model: STI 3100
Selected Size is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$22.30
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Safety Technology International STI 3100 Stopper II Conduit Spacer with Frame

Clear conduit spacer with a frame adds two inches of depth to the patented Stopper II products. For indoor use, it has conduit knockouts on the bottom and top and accommodates both 1/2" or 3/4" rigid conduit. Includes pieces to fill conduit cutouts when there is no exposed conduit.
Main Features
  • Clear conduit spacer with a frame
  • Adds two" of depth to the patented Stopper II products
  • For indoor use
  • Has conduit knockouts on the bottom and top
  • Accommodates both 1/2" or 3/4" rigid conduit
  • Includes pieces to fill conduit cutouts when no exposed conduit
  • 8.5 in H x 5.5 in W x 2 in D
 

Product Specs

Product Line:
Stopper II
Product Name:
Conduit Spacer with Frame - Clear for Stopper II Series
Product Type:
3100 Stopper II Conduit Spacer with Frame
Form Factor:
Surface Mount
Indoor/Outdoor:
Indoor, Outdoor
Device Supported:
Pull Station
Product Group:
Safety
Product Subgroup:
Stopper Devices
Department:
Safety
Product Color:
Clear
Product Dimension:
8.5 in H x 5.5 in W x 2 in D
Product Style:
Classic
Product Material:
Polycarbonate

Safety Technology International STI 3100 – Frequently Asked Questions

1) What does the STI 3100 conduit spacer actually do for a Stopper II cover?
The STI 3100 is a clear polycarbonate spacer with a frame that adds two inches of depth behind a Stopper II cover, so the cover can sit over a pull station that has surface conduit running into it. Without the spacer, exposed conduit and fittings keep the cover from seating flat on the wall. It is a mounting accessory, not a cover or a horn on its own.
2) Will the STI 3100 spacer take 3/4 inch rigid conduit, or only 1/2 inch?
Both. The 3100 spacer accepts 1/2 inch or 3/4 inch rigid conduit, with knockouts on the bottom and the top so you can bring the run in from either direction. If your pull station is fed from above and below, you can open both.
3) Can I install the STI 3100 spacer outdoors?
The 3100 conduit spacer is specified for indoor use. For a covered pull station in an exterior or wash-down location, you want a weather-rated Stopper enclosure instead, not this spacer.
4) What if there is no exposed conduit at the pull station, can I still use the 3100 spacer?
Yes. The 3100 ships with fill pieces that close the conduit cutouts, so you can run it on a flush-fed pull station just to gain the extra two inches of depth and still have a closed, finished-looking enclosure.
5) What are the dimensions of the STI 3100 conduit spacer?
The 3100 spacer measures 8.5 in H x 5.5 in W x 2 in D. The 5.5 inch width is the number to check first if you are mounting beside a door frame, a corner, or a trim piece, since the frame needs that full footprint flat against the wall.
6) Is the STI 3100 spacer a surface mount part, and does it work over a fire alarm pull station?
Surface mount, and it is built for pull stations. It mounts on the wall surface with the Stopper II cover over it, which is how you protect a manual pull station in a school corridor, a gym, or a dorm without cutting into the wall.
7) Will the clear spacer block the view of the pull station underneath?
No. The 3100 spacer is clear polycarbonate, so the pull station stays visible and identifiable through the assembly, which matters where an inspector or an occupant needs to see the device is there.
How fast can I get the Safety Technology International STI 3100 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 3100 come with a warranty?
Absolutely. The Safety Technology International STI 3100 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 3100?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Safety Technology International STI 3100 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!