Premium Select Outlet 50 4ft Aluminum Omega Radiant Heat Transfer Plates 1/2" PEX Ceiling Floor Omega shaped: allows you to snap in PEX pipe during installation. This channel shape offers more contact with tubing than U-shaped plates and has a better heat transfer. 5 inches wide is 10% Wider than the 4.5 inch competition. Increase Radiant Floor Heating System's efficiency and response time. Save time and labor - 4ft long plates allow for 1-person installation. Quantity: 50 48" plates