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XD Eight-output expansion module for Agrowtek's GC-Pro and GC-ProXL series controllers. Add eight more outputs to GrowControl controllers by installing an XD module. GC-Pro controllers accept up to one XD module; GC-ProXL controllers accept up to three XD modules.
This waterproof poly film is black on the outside and white on the inside. The 5 mil thickness polye..
2.5 inch replacement wrench for standard housing on the Hydro-Logic Reverse Osmosis Water filtration..