How much is a ton gate of Jiangxi aluminium roll?Hello, roll gate is usually calculated according to the square count. Is there your Lian Xi?Want to know the size of your installation? The following guidelines and measurement for your reference, you can go out according to the guidelines for measuring hole length and width, a specific size can determine the lattice dielectric.Roll gate installation guide and measurement:The height h (the ground to the top of the doorway height);The table width (the distance between left to right, generally can be divided into single, double, three car garage);H (the height of lintel beam bottom to the height of the ceiling. If there is a beam or stringer in the room, it should be calculated as the distance between the top of the hole and the beam;The effective distance of B1 and B2 around the inside wall of the entrance to;D depth (openings between the garage garage wall distance);Note: effective distance means no obstructions. Such as B1 with water to water the effective distance refers to the distance. If the above the door with a beam or beam, the correct value of H should be the top of the door opening to the beam or beam height.Other related question