Feature:  1. Made of ABS plastic that prevents oxidation of long-term exposure to UV light, waterproof.  2. Ideal for mounting solar panels on RV, campervans, or boats.  3. Installed with glue, no need to punch holes during installation, will not damage the roof of the RV or the deck of the yacht.  4. Easy Installation. Safe and beautiful, and easy to disassemble. Surface-mounting with adjustable grommet and blanking plug.     Specification:  Product Name: Single Cable Entry Gland Box.  Color: Black/White.  Material: ABS Plastic.  Size(LxWxH): 10.7x7.1x4.4cm(4.21x2.79x1.73inch).  Cable Types: 6-12mm.  Installation Location: Roof.  Shape: Oval.  Number Of Round Orifices: 1.     Fitment:  Used in RV roof solar module installation, yacht deck solar module installation and flat roof PV bracket installation.  Note:  1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.  2. Please allow 1-3cm difference due to manual measurement.(1inch=2.54cm). 3.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.  4.(IMPORTANT) No Instructions Included. Professional Installation Is Highly Recommended    Package Included:  1 X Cable Entry Gland Box