4 Ft - 1/2" Omega Type PEX Aluminum Heat Transfer Plates, (100/box) for Radiant Heating (HPS-4) by PEX GUY Genuine PEX GUY Brand plates Omega Type - 1/2" PEX snaps on to the plates to hold it in place. Proudly Made in USA 48 inch long (4 ft) Aluminum Plates for 1/2" PEX piping Dimensions: 48" Long x 4.38" Wide x .016" Thick