Upgraded Safety & Visibility Designed with high-visibility yellow edges and anti-slip surface strips, the Nuvium threshold ramp for doorways helps reduce tripping risks and enhances grip in all conditions. Nuvium threshold ramp's triangle-reinforced base delivers stable support, even on uneven ground. Modular & Adjustable Design 6" Height: Adjustable Height Ramp Dimensions: 28.2" L x 34" W x 6" H. Customize your curb ramp with a modular build. Add or remove sections and fine-tune height from -0.8" to +0.3" using the rotatable top plate. Fits doorsteps from 1" to 6" high perfect for homes, clinics, or public entrances.