Specifications:- Overall Dimension of Each Ramp(LxWxH): 39 7/16" x 9 5/8" x 1 3/4" (100.5 x 24.5 x 4.5 cm)- Channel Size(WxH): 1 9/16" x 1 3/16" (4 x 3 cm)- Lid Width: 3/16" (5 mm)- Load Bearing Capacity: 22000 Lbs (10 t)- Material: Pvc, Rubber- Each Net Weight: 13.2 Lbs (6 kg). Package Contents:- 2x 2-Channel Wire Cover Ramps. Notice: - Like all rubber made products, sometimes an out gassing odor may be present since these units are brand new. This odor will dissipate in time (few days to a few weeks). We recommend you air them outdoors before placing them indoors.