product description:

Mounting Frame

CQC-1019A-XX
XX: For 10 Pair Module 10/20/30/50/60/80/100/110 Pair

CQC-1019B-XX
XX: For 8 Pair Module 8/16/24/32/40/80/88 Pair

CQC-1019C-XX
XX: For 5 Pair Module 5/10/15/25/30 Pair

CQC-1019D-X-XX
X: Type-A=Concave Type; B=Flat Type
XX: Height -2U; 3U; 4U