RGN Snow Guard An inexpensive metal snow guard for metal roofs. RGN (Narrow) Snow Guards are available in Powder Coated Aluminum and Mill Finish Aluminum.Used on metal panel roofs, metal shingles and asphalt shingles. Listing Back To Top Design Visualizer Previous Next Design Visualizer CADdetails™ You need to be logged in to view & download files. Login/Register New to CADdetails? Register to enjoy full access to unlimited 3D models, CAD drawings and specifications. It's free! Downloads Product Info About Media CAD PDF DWF DWG Printable CAD VWX DXF Specs 3-Part Specs Download All Add to Project+ Favorite User Feedback Company Resources Back to top Videos Installation Videos