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R value rating of insulation - r3
+ Product Details Size – 36"w X 18"h is the size for the duct opening measurement only
R value rating of insulation - R3
Airflow – Easy unrestricted airflow for your HVAC system
HVAC Premium Left Cut Aviation Snips - Metal, Tin Cutting Shears Return Grille forEach(toggle => { toggleProfessional Aviation Snips Perfect for Tile, Bolt, Tin, Metal, Roofing, Siding, Wire, Sheet Metal, Branch, Duct, DIY, Home Improvement, etc Cutting HEAVY DUTY CUTTERS These Left Cut Aviation Snips have a SawTooth Design, Edge Serration that can cut Stainless Steel below 0. 6mm or Iron Plate below 1. 2mm Cut Iron Like Paper SHARP SNIPS Head, forged with 50 CR V Chrome Vanadium Steel for superior strength Cutting Edges and Optimal Durability EASY