The simple, streamlined design allows easy assembly and disassembly for cleaning purposes. The grid can be used in living rooms and business rooms. Ø 100mm / 4'' Round Spigot Ensures a Secure and Efficient Connection to your Ventilation System | Compatible with all Types of Circular Ducting High-quality ABS Plastic Construction Resistant to Weather Conditions, UV Rays, and Corrosion, Ensuring Long-lasting Performance Built-in Insect Screen, Effectively Prevents Insects and Other Unwanted Objects from Entering Your Space Suitable for both Indoor and Outdoor Use, Providing Versatile Ventilation Solutions for Different Environments | Modern Design Enhances the Aesthetic Appeal of any Space Designed Specifically for Ceiling Mounting | Wall Mounting is also Possible | Ideal for Use with Bathroom Extractor Fan, Tumble dryer, Cooker hood, Hydroponics, etc., Manufacturer: EUROPLAST