{"product_id":"mirka-wpf-pro-9-in-x-11-in-p320-waterproof-sandpaper-sheets-50-pack-21-101-p320","title":"Mirka WPF PRO 9-in. x 11-in. P320 Waterproof Sandpaper Sheets, 50-Pack (21-101-P320)","description":"\u003csection data-aplus\u003e\n  \u003cdetails id=\"product-features\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"features\"\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/grit-range.svg\" alt=\"grit-range\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eP320 Fine Finish\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eThe fine P320 grit is built for smoothing primers, lacquer, paint, and topcoats when you need a cleaner surface before the next step.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/material.svg\" alt=\"material\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eWaterproof Sheet Design\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eThis Mirka sandpaper sheet is made for manual wet sanding, so it stays useful on paint and bodywork jobs where water helps control dust and improve the finish.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/size.svg\" alt=\"size\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eFlexible Full Sheets\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eEach 9 in x 11 in sheet gives you full-size coverage and can be folded or cut down for hand sanding edges, contours, and repair areas.\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-overview\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eOverview\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\" data-product-summary\u003e\n      \u003cp\u003eThe Mirka WPF Pro 9 in x 11 in Plain P320 Sandpaper Sheets, Model 21-101-P320, is a waterproof abrasive sheet pack built for fine hand sanding on painted surfaces, primers, lacquer, metal, wood, putty, and composite materials. This is a sandpaper sheet designed for manual wet sanding and fine surface preparation. If you do auto body repair, paint correction prep, or finish sanding before topcoat, this is the kind of abrasive that helps you clean up the surface without getting overly aggressive.\u003c\/p\u003e\n      \u003cp\u003eWhat matters here is the balance between cut and finish. Mirka describes WPF Pro as a high-quality waterproof abrasive with a lasting aggressive cut, which means the sheet keeps working without falling off too quickly in the middle of a repair. At P320, you're in that useful range for refining surfaces, smoothing filler or primer, and getting coatings ready for the next stage. That makes it a practical choice when you need consistency more than brute force.\u003c\/p\u003e\n      \u003cp\u003eThe 9 inch x 11 inch full-sheet format keeps it versatile. You can use the full sheet by hand, fold it for better control, or cut it down to fit the exact area you're working. For spot repairs, curved panels, edges, and smaller prep work, that flexibility matters. The plain, non-hook-and-loop format also keeps it straightforward for hand sanding applications where you do not need a machine-backed abrasive.\u003c\/p\u003e\n      \u003cp\u003eMirka also calls out a C-weight latex paper backing for flexibility, along with curl resistance and a non-absorbent construction. In real use, that means the sheet is better suited to wet work and repeated handling than lighter, cheaper paper that softens up too fast. A flexible backing helps the abrasive follow contours and repair areas without fighting you, which is especially useful on automotive panels and detailed finish work.\u003c\/p\u003e\n      \u003cp\u003eFor finish quality, the highly polishable scratch pattern is the key point. That matters because sanding is not just about removing material. It is about leaving behind a surface that is easier to refine, paint, or polish. On primers, topcoats, and lacquer, a more controlled scratch pattern can save time during the next step and help reduce rework.\u003c\/p\u003e\n      \u003cp\u003eThis product is sold as a 50-sheet box, so it makes sense for shops and serious users who go through abrasives regularly. It is a good fit for automotive refinishing, paint prep, wood sanding, and general finish sanding where wet sanding is part of the process. If you need a coarse stock-removal sheet, this is not that. If you need a reliable fine-grit waterproof abrasive for repair and prep work, this is right in its lane.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-benefits\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eBuilt for Wet Finish Sanding\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"row\"\u003e\n        \u003cdiv class=\"img\"\u003e\n          \u003cimg src=\"https:\/\/cdn.anglera.com\/assets\/74d6ed76-fe0d-4d23-a9db-1f8749ca9ef2\/20260624000_1.jpg\" alt=\"Mirka WPF Pro 9 in x 11 in Plain P320 Sandpaper Sheets full abrasive sheet for manual wet sanding on paint, primer, lacquer, metal, and composite repair work\" class=\"tnblock-img\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"copy\"\u003e\n          \u003cp\u003eThis Mirka WPF Pro abrasive sheet is meant for the kind of finish work where surface quality matters as much as material removal. The waterproof construction and flexible paper backing make it a better match for wet sanding and controlled hand work than basic dry-only sheets.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003eP320 grit for fine surface preparation and refinement\u003c\/li\u003e\n            \u003cli\u003eSuited for paints, primers, lacquer, metal, wood, putty, and composite materials\u003c\/li\u003e\n            \u003cli\u003eC-weight latex paper backing for flexibility during hand sanding\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-whats-included\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tnincluded-wrapper\"\u003e\n        \u003cul\u003e\n          \u003cli\u003e(50) Mirka WPF Pro 9 in x 11 in Plain P320 sandpaper sheets\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-key-specifications\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003ctable class=\"aplusspecs\"\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/model-number.svg\" alt=\"model-number\" class=\"aplusicon\"\u003e Grit\u003c\/th\u003e\n          \u003ctd\u003eP320\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/size.svg\" alt=\"size\" class=\"aplusicon\"\u003e Sheet Size\u003c\/th\u003e\n          \u003ctd\u003e9 in x 11 in\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/material.svg\" alt=\"material\" class=\"aplusicon\"\u003e Backing Material\u003c\/th\u003e\n          \u003ctd\u003eC-weight latex paper\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/material.svg\" alt=\"material\" class=\"aplusicon\"\u003e Abrasive Type\u003c\/th\u003e\n          \u003ctd\u003eWaterproof abrasive sheet\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/specs.svg\" alt=\"specs\" class=\"aplusicon\"\u003e Sheet Style\u003c\/th\u003e\n          \u003ctd\u003ePlain sheet\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/specs.svg\" alt=\"specs\" class=\"aplusicon\"\u003e Sanding Method\u003c\/th\u003e\n          \u003ctd\u003eManual wet sanding\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/capacity.svg\" alt=\"capacity\" class=\"aplusicon\"\u003e Package Quantity\u003c\/th\u003e\n          \u003ctd\u003e50 sheets\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/specs.svg\" alt=\"specs\" class=\"aplusicon\"\u003e Recommended Materials\u003c\/th\u003e\n          \u003ctd\u003ePaint, primer, lacquer, metal, wood, putty, composite\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-applications-uses\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eBuilt For\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tags\"\u003e\n        \u003cspan class=\"tag\"\u003eAutomotive Refinishing\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003ePaint Prep\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003ePrimer Sanding\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eTopcoat Sanding\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eMetalworking\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eWoodworking\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eComposite Repair\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eDIY \/ Hobbyist\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-pro-tips\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003ePro Tip\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tip-row\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/specs.svg\" alt=\"specs\" class=\"icon-lg\"\u003e\n        \u003cp class=\"tip-text\"\u003eOn finish work, fold the sheet into smaller sections and rotate to a fresh area as the cut starts to slow down. You get better control on edges and contours, and you make each sheet last longer instead of burning through a whole piece at once.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-tool-nut-take\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eTool Nut's Take\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"eyebrow\"\u003eTool Nut's Take\u003c\/div\u003e\n      \u003ch3\u003eMirka WPF Pro 9 in x 11 in Plain P320 Sandpaper Sheets Keep Finish Work Moving\u003c\/h3\u003e\n      \u003cp\u003eIf your sanding job is more about surface quality than heavy removal, this is the kind of sheet that earns its keep fast.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWho it's for:\u003c\/strong\u003e Auto body techs, painters, finish carpenters, and serious DIY users doing wet sanding, primer prep, and fine surface refinement.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhy it stands out:\u003c\/strong\u003e The waterproof build, flexible latex paper backing, and fine P320 grit make it a smart fit for controlled hand sanding where a clean finish matters.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWorth knowing:\u003c\/strong\u003e This is a plain full sheet for hand work, not a machine-specific hook-and-loop abrasive. It is best when you need finish control, not aggressive stock removal.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-faqs\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eCommon Questions\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eIs this sandpaper made for wet sanding?\u003c\/strong\u003e Yes. Mirka WPF Pro is described as a waterproof abrasive suited for manual wet sanding.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat materials can it be used on?\u003c\/strong\u003e It is suited for paints, primers, lacquer, metal, composite materials, putty, and wood sanding.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat grit is this version?\u003c\/strong\u003e This model is P320, which is a fine grit commonly used for surface prep and finish sanding.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e","brand":"Mirka","offers":[{"title":"Default Title","offer_id":53385933652262,"sku":"21-101-P320-MIRKA","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/20260624000_1.jpg?v=1782171954","url":"https:\/\/www.toolnut.com\/products\/mirka-wpf-pro-9-in-x-11-in-p320-waterproof-sandpaper-sheets-50-pack-21-101-p320","provider":"Tool Nut","version":"1.0","type":"link"}