4 Ft - 1/2" PEX Aluminum Heat Transfer Plates, (100/box) for Radiant Heating (HP-4) by PEX GUY Genuine PEX GUY Brand plates Proudly Made in USA 48 inch long (4ft) Aluminum Plates for 1/2" PEX piping Dimensions: 48" Long x 4.38" Wide x .016" Thick 0.016 Thick High Quality Aluminum Heat Transfer Plates