Photos reveal new US-Mexico border wall prototypes

As President Trump continues to press the need for his promised border wall, new prototypes are offering a look at what a final product, if built, could look like.

According to new images, there are eight total prototypes on display in a California desert, where U.S. Customs and Border Protection is working on the wall portions.

According to NBC News, a concrete portion -- of which there are four prototypes -- would face the U.S. side, while a see-through portion would face toward Mexico. There would also be a monitoring zone of approximately 150 feet to be used by patrol agents in the event of a wall breach.

Click through to see images of the border wall prototypes:

24 PHOTOS
President Donald Trump's border wall prototypes
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President Donald Trump's border wall prototypes
A border patrol officer stands next to some of U.S. President Donald Trump's eight border wall prototypes as they near completion along U.S.- Mexico border in San Diego, California, U.S., October 23, 2017. REUTERS/Mike Blake
Federal agents patrol next to U.S. President Donald Trump's eight border wall prototypes as they near completion along U.S.- Mexico border in San Diego, California, U.S., October 23, 2017. REUTERS/Mike Blake
One of U.S. President Donald Trump's eight border wall prototypes is pictured along U.S.- Mexico border near San Diego, California, U.S., October 23, 2017. REUTERS/Mike Blake
Seven of U.S. President Donald Trump's eight border wall prototypes are shown near completion along U.S.- Mexico border near San Diego, California, U.S., October 23, 2017. REUTERS/Mike Blake
One of U.S. President Donald Trump's eight border wall prototypes is pictured along U.S.- Mexico border near San Diego, California, U.S., October 23, 2017. REUTERS/Mike Blake
Two of U.S. President Donald Trump's eight border wall prototypes are shown near completion along U.S.- Mexico border near San Diego, California, U.S., October 23, 2017. REUTERS/Mike Blake
A prototype for U.S. President Donald Trump's border wall with Mexico is seen behind the current border fence in this picture taken from the Mexican side of the border in Tijuana, Mexico October 12, 2017. REUTERS/Jorge Duenes
A prototype for U.S. President Donald Trump's border wall with Mexico is seen in this picture taken from the Mexican side of the border in Tijuana, Mexico October 12, 2017. REUTERS/Jorge Duenes
Prototypes for U.S. President Donald Trump's border wall with Mexico are shown near completion behind the current border fence, in this picture taken from the Mexican side of the border, in Tijuana, Mexico, October 23, 2017. REUTERS/Jorge Duenes
Three of U.S. President Donald Trump's eight border wall prototypes are shown near completion along U.S.- Mexico border in San Diego, California, U.S., October 23, 2017. REUTERS/Mike Blake
A prototype for U.S. President Donald Trump's border wall with Mexico is shown in this picture taken from the Mexican side of the border, in Tijuana, Mexico, October 23, 2017. REUTERS/Jorge Duenes
Prototypes for U.S. President Donald Trump's border wall with Mexico are shown near completion in this picture taken from the Mexican side of the border, in Tijuana, Mexico, October 23, 2017. REUTERS/Jorge Duenes
People work in San Diego, California, U.S., at the construction site of prototypes for U.S. President Donald Trump's border wall with Mexico, in this picture taken from the Mexican side of the border in Tijuana, Mexico October 3, 2017. REUTERS/Jorge Duenes
People work in San Diego, California, U.S., at the construction site of prototypes for U.S. President Donald Trump's border wall with Mexico, in this picture taken from the Mexican side of the border in Tijuana, Mexico October 3, 2017. REUTERS/Jorge Duenes
People work in San Diego, California, U.S., at the construction site of prototypes for U.S. President Donald Trump's border wall with Mexico, in this picture taken from the Mexican side of the border in Tijuana, Mexico October 3, 2017. REUTERS/Jorge Duenes
People work in San Diego, California, U.S., at the construction site of prototypes for U.S. President Donald Trump's border wall with Mexico, in this picture taken from the Mexican side of the border in Tijuana, Mexico October 3, 2017. REUTERS/Jorge Duenes TPX IMAGES OF THE DAY
People work in San Diego, California, U.S., at the construction site of prototypes for U.S. President Donald Trump's border wall with Mexico, in this picture taken from the Mexican side of the border in Tijuana, Mexico October 3, 2017. REUTERS/Jorge Duenes
People (R) work in San Diego, California, U.S., at the construction site of prototypes for U.S. President Donald Trump's border wall with Mexico, in this picture taken from the Mexican side of the border in Tijuana, Mexico October 3, 2017. REUTERS/Jorge Duenes
People work in San Diego, California, U.S., at the construction site of prototypes for U.S. President Donald Trump's border wall with Mexico, in this picture taken from the Mexican side of the border in Tijuana, Mexico October 3, 2017. REUTERS/Jorge Duenes
Prototypes for U.S. President Donald Trump's border wall with Mexico are seen behind the current border fence in this picture taken from the Mexican side of the border in Tijuana, Mexico October 12, 2017. REUTERS/Jorge Duenes TPX IMAGES OF THE DAY
Prototypes for U.S. President Donald Trump's border wall with Mexico are seen behind the current border fence in this picture taken from the Mexican side of the border in Tijuana, Mexico October 12, 2017. REUTERS/Jorge Duenes
A prototype for U.S. President Donald Trump's border wall with Mexico is seen in this picture taken from the Mexican side of the border in Tijuana, Mexico October 12, 2017. REUTERS/Jorge Duenes
A prototype for U.S. President Donald Trump's border wall with Mexico is seen in this picture taken from the Mexican side of the border in Tijuana, Mexico October 12, 2017. REUTERS/Jorge Duenes
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Trump promised repeatedly throughout his 2016 campaign, and now as president, that Mexico would be paying for the wall, but Mexico has come back by rejecting the promise. While the White House's proposed budget includes $1.8 billion allotted for the building and repair of wall sections, internal Department of Homeland Security assessments have said the cost could mount up to $21 billion.

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