Chamberlain 0.5 HP myQ Smart Chain Drive Garage Door Opener with MyQ and Wi Fi Compatibility Multi‑Voltage Charger 16D common nails are typically 1000088971 16D common nails are typically 3 1 2 inches long and about 8 gauge Sleek Utility with Lasting Polish Complete connectivity: with built in Wi Fi you can open and close your garage door from anywhere and get my Q® Apr alerts Powerful: with lifting force equivalent to 1 2 HP Proven quality: the durable chain drive and rigorous quality testing of Chamberlain ensures lasting performance Safe and secure: The highest level of encryption and monitoring paired with your home’s ISP and Wi Fi router firewalls guard against hacking Perfect fit: Compatible with garage doors up to seven feet high Additional assurance: One year (chain) and six year (motor) warranties Box includes: 3 button remote safety sensors and push button door control About Chamberlain: The largest and most dependable garage door opener manufacturer in North America