Hillman 1-1/2-in W x 1-1/2-in H x 8-ft L Zinc-Plated Steel Perforated-Slotted Angle in the Angles department at Lowes.com
Everbilt 96 in. x 2 in. x 1/16 in. Thick Aluminum Angle 802607 - The Home Depot
VEVOR 2 Inch OD Round Pipe Steel Mounting Frame, Yellow Zinc Plated Steel Frame Right Angle Mounting Bracket with Polyester Strap, for Square Tubing and Angle Iron | VEVOR US
2 1/2" x 2 1/2" x 3/16" Angle Iron – Old West Iron