Flexible Urethane Truncated Dome ADA Pads - Retrofit Style for Installation on Concrete Surfaces Made in American by UltraTech and Distributed Nationally by Truncated Domes Depot. All orders Ship Free by Ground Services. Expedited air shipping is not available. This product is shipped from Florida in 1-4 business days. These 24" x 48" size flexible truncated domes pads offer advantages not found in hard tiles made of ceramics, fiberglass or other composites. The heavy-gauge urethane material of this product, reinforced for even more strength and durability, allows these flexible ADA pads to be applied to slightly irregular surfaces, or on slight inclines/declines in ground level.Slip resistance ratings are excellent and longevity of these reinforced ADA dome pads exceeds the five-year minimum required by federal law. Hard enough to offer required audible detection from the tapping of a cane, but having a slightly spongy resilience makes these urethane truncated domes virtually unbreakable. Detectable warnings that are installed must meet the following requirements. They shall consist of raised truncated domes with a diameter of nominal 0.9 in (23 mm), a height of nominal 0.2 in (5 mm) and a center-to-center spacing of nominal 2.35 in (60 mm) They shall contrast visually with adjoining surfaces, either light-on-dark, or dark-on-light. The material used to provide contrast should contrast by at least 70%.* The material used to provide contrast shall be an integral part of the walking surface Detectable warnings used on interior surfaces shall differ from adjoining walking surfaces in resiliency or sound-on-cane contact Looking for truncated domes that can be installed on asphalt surfaces often found in parking lots and pedestrian paths? See our Self-Adhesive Truncated Domes Mats for both Concrete and Asphalt.