Heelguard Threshold Drain is an Australian made ''Zero Threshold'' system. Available in both 304 & 316 grade stainless steel. All grate and insert options are manufactured to AS3966 & AS1428. Designed to seemlessly integrate drains into sliding door tracks, bifolds or hinged doors eliminating trip and slip hazards of step-downs. Heelguards threshold drains offer level access between indoor and outdoor areas.