National 8 In. Zinc Extra Heavy-Duty Door Barrel Bolt MASTER Curved handle is large enough

Curved handle is large enough for two handed movement

Door must have a factory bored 9/16-inch by 1-3/8-inch mortised hole on the edge of the door

With the Chamberlain myQ App

Requires a minimum of 8 to 10 sq ft of net free air exhaust vent area

wide channel directs water away from the foundation

National 8 In. Zinc Extra Heavy-Duty Door Barrel Bolt MASTER Curved handle is large enoughNational Catalog Model V832. This bolt is designed for security on farm buildings, sheds, stockrooms, doors, and other heavy duty installations. It can be padlocked for additional protection. Can be mounted with carriage bolts for added security. Surface and universal strikes are provided.