“UL Subject 1971:1999” has been added to your cart. View cart Home UL UL Subject 639:2013 UL Subject 639:2013$158.60 Original price was: $158.60.$79.00Current price is: $79.00. Standard for Intrusion-Detection Units (CSDS Proposal, 2/1/2013) Underwriters Laboratories , 02/01/2013 UL Subject 639:2013 quantity Add to cart Category: UL Description Standard By:Underwriters Laboratories , 02/01/2013 Published:02/01/2013 Related products UL Subject 676:1999 $247.42 Original price was: $247.42.$123.00Current price is: $123.00. Add to cart UL Subject 2329:1999 $290.32 Original price was: $290.32.$145.00Current price is: $145.00. Add to cart UL Subject 1062:1999 $282.91 Original price was: $282.91.$141.00Current price is: $141.00. Add to cart UL Subject 1971:1999 $215.53 Original price was: $215.53.$107.00Current price is: $107.00. Add to cart UL Subject 1564:1999 $161.46 Original price was: $161.46.$80.00Current price is: $80.00. Add to cart UL 507:1999 $155.31 Original price was: $155.31.$77.00Current price is: $77.00. Add to cart UL Subject 1686:1999 $119.03 Original price was: $119.03.$59.00Current price is: $59.00. Add to cart UL 1413 $631.00 Original price was: $631.00.$315.00Current price is: $315.00. Add to cart UL Subject 2329:1999 $120.39 Original price was: $120.39.$60.00Current price is: $60.00. Add to cart UL Subject 6500:1999 $213.52 Original price was: $213.52.$106.00Current price is: $106.00. Add to cart