good Science come across ul type 21s Inhale receiving B.C.
Amazon.com: TR Industrial Contractor Series UV Cable Ties (50-Piece), 24", Type 21S, Made in USA : Electronics
Amazon.com: Utilitech 8 Inch-1000 Pk, Outdoor, 75lb Strength, UV Resistant Zip Ties, Bulk Bag, Cable Zip Ties 1000 count, UV Resistant Zip Ties, Zip Ties 1000, Type 21S (SGY-CT59) : Electronics