United States Black Box Products Jacks, Panels, & Hardware > Raceways Hinged Raceway 90 Flat Elbow, 2900 Series (1 1/2"W x 3/4"D) Make 90 run changes. 36928 Extended Double DiamondTM Warranty Available (Lifetime) Product Highlights * * hange directions in your Hinged Raceway runs. C Guaranteed for life! Details Description Hinged Raceway 90 Flat Elbow, 2900 Series (1 1/2"W x 3/4"D) Quick Facts * * Change directions in your Hinged Raceway runs. Guaranteed for life! Further Details * NOTE: Other sizes available.