actual front end outer dimensions are approximately 24 5/8" width X 24 5/8" height
+ Product Description Introducing the 6" Butterfly Damper – Your Solution for Controlled Airflow
+ Product Details Size – 16" x 16" is the size for the duct opening measurement only
R value rating of insulation - r3
+ Product Details Size – 36"w X 18"h is the size for the duct opening measurement only
HVAC Premium Left Cut Aviation Snips - Metal, Tin Cutting Shears Return Grille actual front end outer dimensionsProfessional 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