Flexible and Customizable: Our threshold ramp featues a modular design with two height options: 1" or 2", and maximum usable width is 31-1/2". Non-Slip Threshold Ramp: Our threshold ramp features a textured, non-slip surface that provides superior traction and reduces the risk of slipping.Thick anti-slip pads on the bottom further ensure stability, preventing the ramp from shifting during use.