Shall be die cast of No. 380 Alloy with tensile strength of 49,000 pounds per square inch with excellent resistance to corrosion.  The brackets shall be smoothly finished free of holes, pits, or flaw.  All brackets shall have 2 angled gussets, or ribs on each side for extra strength.  All sets of brackets shall be tapped and drilled for 10 each 5/16" zinc.  Dichromate plated Allen-type set screws having self-locking saw tooth ends.

Slot Length: 5.5"
Slot Depth: .875"
Slot Width: .160" (flat) .280" (extruded)