1.Used in RV roof solar module installation, yacht deck solar module installation and flat roof PV bracket installation. 2.The material is added with anti-UV agent and has UV resistance to ensure discoloration for a long period of time 3. Installed with glue, no need to punch holes during installation, will not damage the RV roof or yacht deck 4.Easy to install and disassemble, convenient to use 5.100% brand new and high quality Size: 115x95mm Material: plastic Color: black Package Contents: 4x Roof Inlet Gland Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.