Sliding Solar Panel Rack Systems (Legacy) SR1R Series Designed to fit under rooftop cargo racks, tents, etc. Optimized for front or rear extension on Class B RV's with or without factory roof rails. Supports PV Arrays sizes up to 64in [1626mm] long and 65in [1651mm] wide. DETAILS ORDER SR2R Series Doubles your rooftop's PV footprint. Optimized for front or rear extension on Class B RV's with or without factory roof rails. Supports PV Arrays sizes up to 64in [1626mm] long and 65in [1651mm] wide. DETAILS ORDER SR1S Series Designed to fit under rooftop cargo racks, tents, etc. Optimized for side extension on Class B RV's with or without factory roof rails. Supports PV Arrays sizes up to 64in [1626mm] long and 67in [1702mm] wide. DETAILS ORDER SR2S Series Doubles your rooftop's PV footprint. Optimized for side extension on Class B RV's with or without factory roof rails. Supports PV Arrays sizes up to 64in [1626mm] long and 67in [1702mm] wide. DETAILS ORDER