Because most people are right handed. We also drive on the right side of the road.
To determine if a door has a left or right inswing, stand outside the door and note which side the hinges are on. If the hinges are on the left, it is a left inswing door. If the hinges are on the right, it is a right inswing door.
If you're talking about the trailer door, you move the metal latch up, move the handle up then left or right, depending on what door until the door is unlocked, move it back into the holder and latch it on side of the trailer.
To determine if a door is right-hand or left-hand, stand facing the door from the outside. If the hinges are on the left, it's a left-hand door. If the hinges are on the right, it's a right-hand door.
To determine if a door is for the right or left hand, stand facing the door. If the hinges are on the left side, it's a left-hand door. If the hinges are on the right side, it's a right-hand door.
If you're talking about the trailer door, you move the metal latch up, move the handle up then left or right, depending on what door until the door is unlocked, move it back into the holder and latch it on side of the trailer.
To determine whether a sliding door is right or left sliding, observe the direction it opens. A right sliding door moves to the right when opened, while a left sliding door moves to the left. Additionally, you can identify the fixed panel; in a right sliding door, the fixed panel is on the left side, and in a left sliding door, it is on the right side.
To determine if a door is left-handed or right-handed, stand outside the door and observe which side the hinges are on. If the hinges are on the left, it is a left-handed door. If the hinges are on the right, it is a right-handed door.
To determine if an exterior door is left-handed or right-handed, stand outside the door and observe which side the hinges are on. If the hinges are on the left, it is a left-handed door. If the hinges are on the right, it is a right-handed door.
To determine if a door is right-handed or left-handed, stand outside the door and observe which side the hinges are on. If the hinges are on the right side, it is a right-handed door. If the hinges are on the left side, it is a left-handed door.
To determine if a door is right-handed or left-handed, stand outside the door with your back against the hinges. If the doorknob is on the right side, it is a right-handed door. If the doorknob is on the left side, it is a left-handed door.
A left-hand door is hinged on the left side and opens towards the left when you face the door from the outside. A right-hand door is hinged on the right side and opens towards the right when you face the door from the outside. The difference lies in the direction the door swings open.
A right hand door is a door that opens to the right when facing it from the outside. A left hand door opens to the left when facing it from the outside. The difference lies in the direction in which the door swings open.