Threaded Unipart Porcelain Insulators From the United States

Note:  Click on each insulator for larger pictures and more information!

U-191 through U-225 are telephone transposition styles

U-191 U-191A U-192 U-192A U-193 U-194 U-195 U-196 U-197 U-197A

U-197B U-198 U-199 U-199A U-200 U-200A U-201 U-202 U-202A U-205

U-206 U-206A U-206B U-207 U-209 U-211 U-212 U-213 U-213A

U-214 U-215 U-217 U-219 U-220A/B U-222A/B U-223A/B U-224A/B U-225A/B

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