B71 is an optional extension back box for cable management and can be used for surface, pendant or horizontal wall mounting of the M71 dome camera . Optional use with pendant mount EMT pipe 3/4 inch or horizontal wall mount with i3's optional DB60 goose neck bracket. Warranty: 5-year parts. i3 International produces a range of camera and NVR accessories applicable for many retail, commercial and industrial applications. From aluminum camera brackets to UTP & power Supplies our full line of accessories offer tremendous value to security and loss prevention professionals.