Carlon 1-Gang 20 cu. in. New Work Electrical Ceiling Box with Captive Nails NEW Product Details The Carlon Zip Box Blue 1-Gang 20 cu. in. Non-Metallic Ceiling Box is designed for use with non-metallic sheathed cable in accordance with Article 314 of the National Electric Code. Great for residential and light commercial applications, the box is made with polycarbonate, is listed for use with masonry walls and can be used with 90 degree C-conductors. It meets NEMA OS-2 and is fire rated and UL Listed for safety.Use to support fixtures up to 50 lbs.Not intended for fan supportThermoplastic construction resists rust and won't conduct electricityInstalls with captive nails, ground lug and screw (included)Built-in cable clamps hold wires firmly in place SHIPPING We provide fast, free shipping. Most items are shipped within 3-5 business days of receiving cleared payment. We ship to the lower 48 contiguous United States only. We do not ship to P.O. Boxes or APOs. RETURNS We offer a 30 day return/exchange policy for most of our products. You can request a refund if you are dissatisfied for any reason with your product. (Restocking Fee May Apply). Only factory defects are accepted as a reason for a return. In the case of factory defects, if available, we will replace the product for you. When returning an item, it must be in all of the original packaging and include all of the original accessories or items that came with it. The item and package should be in original and perfect condition. You will be required to cover shipping on the return of non-defective items. All returns MUST be done within 30 days of date of purchase. Please note that we cannot give refunds or replacements after the 30 day limit has expired. When sending in a return, please note that it can take up to 7 business days for the return to be processed. We do our best to process as quickly as possible. We are extremely fair, and in the rare event of something out of the ordinary happening with our products or shipping, we will gladly work with you to find a fair resolution.