VEVOR PEX Heat Transfer Plates, 100 pcs Box Radiant Heat Transfer Plates, 4 ft Aluminum PEX Heat Transfer Plates, 1/2 inch Heat Transfer Plates Designed for PEX Tubing | VEVOR US
Box Tube Extrusion - AndyMark, Inc
Everbilt 1 in. x 96 in. Aluminum Square Tube with 1/20 in. Thick 802537 - The Home Depot
U.S.A. Made - PEX GUY Aluminum 4 ft U-Channel Heat Transfer Plates for 1/2" PEX - Radiant Heating (100pc/box) - Pex Tubbing - Amazon.com
Shop Aluminum Channel 6063-T52 Architectural 2.25 (A) x 0.875 (B) x 0.125 (t) x 0.125 (t2) Online | Buymetal.com