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Expanding on the topic of hollow metal doors and frames, it is important to understand the various uses and benefits of these components in residential, commercial, and institutional settings. Whether it is for security, durability, fire resistance, or protection against inclement weather and insects, hollow metal doors and frames play a crucial role in maintaining safety and functionality in buildings.

Manufacturers of hollow metal doors and frames adhere to the norms set by the Steel Door Institute for Modular Masonry Construction. These standards ensure that the doors and frames meet the necessary requirements for strength, security, and maximum fire resistance. The door and frame serve as the foundation for the entire opening, and while they may not be the most expensive part, they often present the most complex challenges.

When referring to a hollow metal door, it is typically in the context of a steel commercial door, distinguishing it from an overhead roll-up steel door. Hollow metal doors and frames are predominantly used in commercial construction but can also be utilized for interior and exterior applications. They are constructed with thin sheets of steel, ranging from 1.2mm thick or 14 to 16 gauge on average.

To ensure a successful installation, it is crucial to correctly size the doors and frames according to the specifications of the project. Hollow metal frames, including knock-down frames, should be sized based on the type of wall they will be installed into. In drywall partitions, the frame should measure 1" smaller than the wall opening in both height and width. In masonry walls, the frame should be 2" smaller than the opening.

The building plans should be carefully examined to determine how the frames will be installed – whether they should wrap around the wall or butt up against it. Jamb depth is another important consideration, as it determines the thickness of the frame where it meets the wall. If the frame is butted, the jamb depth should match the wall's thickness, whereas wrapped frames should be 1" wider than the wall. Jamb depth measurements vary depending on whether it is a masonry or drywall frame.

When it comes to sizing hollow metal doors, their width should be 1/8" smaller than the frame to allow for clearance on each side, ensuring the door can swing open without any obstruction. The height of the door is typically 3/4" to 7/8" smaller than the frame, providing clearance at the top and bottom of the opening. If there are floor coverings or thresholds, the amount of clearance at the bottom may vary.

It is also important to consider pairs of doors, which are sized differently. Each door in a pair should be undersized 3/4" to 7/8" in terms of height. However, width-wise, each leaf of the pair should only be 3/16" smaller than the frame. This allows for proper clearance at each hinge jamb and between the two doors, thus minimizing gaps that could hinder proper closing and locking.

It is worth noting that the size of hollow metal doors may differ slightly across manufacturers and types. Therefore, it is essential to consult the manufacturer's guidelines and specifications to ensure accurate sizing and compatibility.

In conclusion, hollow metal doors and frames are essential components in various constructions, providing strength, security, durability, and fire resistance. Proper sizing of both the doors and frames is crucial for a successful installation, and adherence to industry standards ensures their effective performance. If you would like more information on hollow metal doors and frames, including knock-down frames, or have specific inquiries regarding sizes and specifications, please contact Sheth Fabricators Private Limited at Phone: 91 22 27554441 OR 91 22 27554442, Fax: 91 22 27554440. As a leading manufacturer of commercial and residential metal and steel doors, frames, and windows, Dorplus offers a wide range of standard and custom options to meet your architectural and building material needs.