Product details:

3 Inch internal system with snap and lock connection 90 Degree turn on both sides - no adapters needed - 2 end caps and bottom outlet adapter included! Secured fastened gratings to channels - Are removable Leaves our warehouse within 24 hours! Perfect for home and gardens - A Class Rated at 3,300 LBS Spark 1 Premium Channels come with galvanized stamped steel grating. The grating is fastened in with custom screws in the grate for a secure hold to the channel. The channels are designed with a snap and lock connection end to end. Come with 2 end caps per package. Channels also have a 90 degree turn knockout on EACH end of the channel. No need to purchase adapters. Thank you very much!