PI 21n Notched Terminal Insulator
For insulating low-tension fences at corner and end posts and around trees.
Notch eliminates need to thread strand of cable or twine through insulator.
Common Uses
Specs
- 2-3/4"L x 1-1/4"W
- Glass filled nylon
- 25 per package, but sold individually
Benefits
How to Use
- From the closed hole, attach insulator (using rope or wire) to a tree, end or corner T post.
- Through the notched set of holes, thread fence conductor and terminate at ends, or continue on for corners. Note: If using this insulator for rope or MaxiShock, a P Spring can be tied directly to the insulator prior to fence wire being attached to P spring using rope or wire.
- When the fence wire is pulled tight, this insulator will pull away from the post.
Precautions
Listed below are recommended optional components or related items. Your particular situation may require alternative recommendations. Please call and talk to our consultants if there are any questions at 800-282-6631.
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Handling Equipment
Galvanized Steel T Post, 7 ft
Item #327800 -Thick galvanized coating protects posts from the elements. Excellent supports for portable, permanent and high-tensile fence systems.
$25.50 -
Insulators
T Post Safety Cap, each
Item #381010 -White plastic cap that sits atop steel t posts to prevent damage to scratching livestock.
$0.44 -
Wire Panels and Accessories
3/16" dia. Braided Cord, 8 ft
Item #965410 -Braided nylon cord for general utility around the farm. Hang poultry waterers and feeders. Attach wire panels and gates.
$1.50 -
Fence Connectors and Accessories
P Spring
Item #255010 -Used to keep rope fences at desired tension. Install a P Spring every 1320 ft.
$3.10 -
Conductors - Rope-Twine-Wire-Tape
IntelliBraid®, 660 ft. roll
Item #256710 -6mm (1/4") dia. braided rope conductor for electric fences. Black/white color is easy for humans and livestock to see. Polyester for high UV-resistance.
$113.00 -
Fence Connectors and Accessories
RopeLink 2.6 (for 6mm rope)
Item #256210 -For splicing or terminating 4.5mm and 6.0mm fence conductors. A fast, yet secure connection.
$0.82 -
Fence Connectors and Accessories
PowerLink™ 4.0, 30" long
Item #335500 -Make instant, in-field connections between electric fences without turning off the energizer. Simple to use and effective.
$5.00 -
Fence Connectors and Accessories
Fence & Battery Digital Tester
Item #200010 -All-in-one fence tester checks the voltage of energizers, fences and 12V batteries. Simplify electric fence troubleshooting with one device!
$24.00 -
Fence Connectors and Accessories
Conductor Hook
Item #237400 -A quick, easy way to terminate a fence. Secures and insulates the leading end of twine, rope or tape to an existing fence.
$1.10 -
Fencing
Warning Sign
Item #346000 -Let passersby know that your fences are electrified with this easy-to-read electric fence warning sign.
$1.60 -
Conductors - Rope-Twine-Wire-Tape
EnduraSoft® 6.0, 660 ft roll
Item #256500 -Highly visible polyester electric fence conductor with excellent conductivity over long distances. 6mm (1/4") diameter. 25 years probable life.
$98.00 -
Conductors - Rope-Twine-Wire-Tape
IntelliRope® PE 6.0, 660 ft. roll
Item #256900 -6mm (1/4") dia. electrifiable rope for permanent or temporary fences. Polyethylene filaments resist wear and abrasion. An effective anti-deer conductor.
$59.00 -
Conductors - Rope-Twine-Wire-Tape
IntelliRope® PE 4.5, 660 ft roll
Item #245100 -4.5mm (3/16") electrifiable rope for permanent or rotational grazing fences. Tinned copper filaments for high conductivity (50 Ω per 1000 ft).
$40.00 -
Conductors - Rope-Twine-Wire-Tape
IntelliBraid® Twine PE 3.0, 660 ft roll
Item #253530 -Lightweight 3mm braided polywire for portable livestock fences. Slightly thicker than standard twine so it’s more visible to animals and humans.
$32.00 -
Conductors - Rope-Twine-Wire-Tape
IntelliTwine™ 2.25, 660 ft. roll
Item #253500 -2.25mm (12 gauge/.09" dia.) electric fence conductor for temporary livestock and garden fences. Lightweight and easy to move.
$23.00 -
Conductors - Rope-Twine-Wire-Tape
MaxiShock™ Wire, 1320 ft. roll
Item #251000 -Twisted cable conductor for electric fences. Thick layer of galvanized coating for years of outdoor use.
$129.00 -
Conductors - Rope-Twine-Wire-Tape
IntelliTape™, 330 ft. roll
Item #257010 -A 1/2" wide electric fence conductor whose visibility is ideal for horses and other large, fast moving livestock.
$18.00
Write a Review
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Janelle C from Washington
Super lovely to not have to restring the whole fence. These are sturdy and strong. Very pleased.
Larry H from Tennessee
The notched insulator made putting up the single strand deer fence around my 1/4 acre market garden a snap. When I mow it takes just a minute to loosely coil the twine and pull out the step in posts so I only have to work around the corner t-posts.
Michael C from Louisiana
This is a half baked design in my opinion. Good start, but needs work. The only reason I feel compelled enough to review it is they failed exactly how I expected them to.
It is difficult to explain but because of the way that the wire must go into the insulator (horizontal as shown in the picture) the part that attaches to the post is extremely awkward, at best.
You have two options, loop it through the given hole which is vertical which causes the insulator to twist, or you have to loop it through the horizontal open hole furthest away from the post. That can cause the insulator to flip down which can pop the wire out and in my cause caused a gate handle to pop out, releasing my goats.
I might recommend pairing these with zipties to hold them firmly in place.
Joe H from SC
Simple and last a long time in service. Never had a failure.
Jackie G
Great invention. Made stringing the fence so much quicker! I will use only these in the future (other than at rope gates). The regular insulator works best there.
