Home UL UL Subject 20 “UL Subject 181B” has been added to your cart. View cart UL Subject 20$101.00 Original price was: $101.00.$50.00Current price is: $50.00. Standard for General-Use Snap Switches (Bulletin, 5/21/1999) Underwriters Laboratories , 05/21/1999 UL Subject 20 quantity Add to cart Category: UL Guaranteed Safe Checkout Description Standard By:Underwriters Laboratories , 05/21/1999 Published:05/21/1999 Related products UL Subject 10 $152.00 Original price was: $152.00.$76.00Current price is: $76.00. Add to cart UL Subject 252 $252.00 Original price was: $252.00.$126.00Current price is: $126.00. Add to cart UL 224 $284.00 Original price was: $284.00.$142.00Current price is: $142.00. Add to cart UL Subject 1670 $136.00 Original price was: $136.00.$68.00Current price is: $68.00. Add to cart UL Subject 555C $297.00 Original price was: $297.00.$148.00Current price is: $148.00. Add to cart