{"product_id":"290-flat-spline","title":".290 Flat Spline","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNational Screen Supply .290 Flat Spline is a premium cold-weather screen retention spline engineered specifically for use within the \u003cstrong\u003eNational Screen System\u003c\/strong\u003e. Unlike standard spline materials that can become brittle, crack, or lose flexibility when temperatures fluctuate, National Screen Supply Flat Spline is formulated to remain pliable and maintain reliable retention in a wide range of weather conditions.\u003c\/p\u003e\n\u003cp\u003eDesigned for professional installers, fabricators, and supply yards, this spline provides consistent compression, secure screen retention, and long-term durability for both polyester and hybrid screen systems. Its precision sizing helps maintain uniform screen tension while reducing installation issues in the field.\u003c\/p\u003e\n\u003cp\u003eAs a key component of the National Screen System, this spline is engineered to work seamlessly with National Screen Supply extrusions and screen products to provide superior fit, performance, and durability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eProduct Type: Flat Spline\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSize: .290\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaterial: Cold-Weather Flexible PVC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRoll Length: 1,000'\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eColor: Black\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTemperature Performance: Formulated to remain flexible in changing weather conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatibility: Designed for National Screen System extrusion profiles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eScreen Compatibility: Polyester and Hybrid screen systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApplication: Screen enclosures, patio enclosures, screen rooms, and aluminum framing systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstallation Method: Compression fit into flat spline groove\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUV Resistant: Suitable for exterior applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering Info\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSold As: 1,000' roll\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eColor: Black\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFreight: Ships via standard parcel or LTL depending on order quantity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLead Time: Normally ships within 3 business days\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended System Pairing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor consistent installs and reduced field issues, this spline is designed to be used with:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNational Screen Supply Aluminum Extrusions\u003c\/strong\u003e\u003cbr\u003ePrecision-matched groove tolerances for secure retention and simplified installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNational Screen Supply Polyester Screen\u003c\/strong\u003e\u003cbr\u003eHigh durability, low stretch, and ideal for standard enclosure applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNational Screen Supply Hybrid Screen\u003c\/strong\u003e\u003cbr\u003eEnhanced strength and performance for higher-demand environments.\u003c\/p\u003e\n\u003cp\u003eUsing a matched system helps eliminate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eImproper spline fit\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eScreen blowout or pull-through\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eScreen sagging or uneven tension\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstallation inconsistencies across projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCold-weather formulation helps prevent brittleness and cracking\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned to maintain flexibility through seasonal temperature changes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStore in a cool, dry location prior to installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePolyester and Hybrid screens are recommended for best performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProper spline installation is critical to long-term screen retention\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntended for use within the National Screen System\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBest Practice:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor the best fit, performance, and long-term durability, use National Screen Supply flat spline, screen, extrusions, and accessories together as part of the \u003cstrong\u003eNational Screen System\u003c\/strong\u003e.\u003c\/p\u003e","brand":"National Screen Supply","offers":[{"title":"Default Title","offer_id":43385279414339,"sku":"1SP290","price":105.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/5544\/0195\/files\/OASITek_Screens_Flat_Spline.png?v=1781284203","url":"https:\/\/nationalscreensupply.com\/products\/290-flat-spline","provider":"National Screen Supply","version":"1.0","type":"link"}