Our Flatback Keder™ flap is designed with a shield-shaped, PVC core that ensures easy installation with snug tracks and won't snag or rip your fabric. The core is fully bonded, ensuring it maintains its shape and strength even in the toughest of conditions. Available at a minimum length of 45 feet, additional increments sold in 3 foot segments. Always… Made In House. Call (888) 727-7050 or Contact Us for a Quote on bulk purchase options