Here are some reasons why 20 became the standard size: It is pretty easy to carry a pack of 20 cigarettes, thanks to the compact size
[13] [14] [15] Various TV advertisements were also created
1 x AQUA FILTRA 20 Filter Body with Motor 1 x Adjustable Intake Tube with Strainer 1 x Leveling Adjustment Knob 1 x Genuine Sicce AQUA FILTRA 10-20 Complete Media Cartridge 1 x User Manual Technical Specifications: Recommended Aquarium Size: Up to 20 Gallons (80 Liters) Flow Rate: 80 GPH (300 L/h) Power Consumption: 4.5 Watts Voltage: 120V / 60Hz Country of Origin: Italy
312, Renmin Road, Ningbo, Zhejiang, China Business Type: Manufacturer/Factory, Trading Company Business Range: Arts & Crafts, Auto, Motorcycle Parts & Accessories, Construction & Decoration, Electrical & Electronics, Industrial Equipment & Components, Light Industry & Daily Use, Lights & Lighting, Office Supplies, Toys Management System Certification: ISO 9001 Company Introduction: Ningbo Hangyuan International Trading Co., Ltd
However, the freeze test did kill the battery, so this is not my go-to choice for my winter expeditions
Consider Your Purpose  
