Residential Fire Doors 2026

Table of Contents

Neutral vs. Positive Pressure How to Choose a Fire-Rated Door

20-Minute Fire-Rated Wood Edge Therma-Tru® Smooth-Star® Therma-Tru® Profiles Steel ™ Therma-Tru® Traditions Steel ™

Hardware & Accessories 12 90-Minute Hinges 12 20-Minute Hinges 12 Door Viewer 12

3

8

8 9 9

4

Locks

13

90-Minute vs.

Frames & Sills

10

Rough Openings

14

20-Minute Units

5

90-Minute Split-Steel Frame 20-Minute Frame Options

10 10

Reinforced Doors

14

90-Minute Fire-Rated Steel Edge

90-Minute Sill Options

11 11

6

20-Minute Inswing Sill Options

Image Index

15

RSP 24 Gauge RSP 22 Gauge

6 7

Resources

15

Neutral vs. Positive Pressure

The Underwriters Laboratory (UL) and Warnock Hersey (Intertek Testing Services) are the entities that test and rate all fire doors. To properly rate the door, it must be tested as a complete unit with hardware and installed on a wall with a test environment behind it. The primary purpose of the test is to ensure the door can contain the spread of the fire. A neutral pressure area is below the pressure plane, and a positive pressure area is above the plane. Neutral Pressure

Positive Pressure Positive pressure assumes the pressure plane is 40” from the bottom of the door. Air flows into the room at the bottom, but flows out at the top. Along with the circulating air, dangerous gases or flames may also escape causing the door’s face to burn.

Neutral pressure assumes the pressure plane to be above the top of the door, and the pressure will not build up in the room containing the fire. Air flows into the room at the bottom and top of the door preventing flames from spreading. A weatherstrip helps to eliminate the smoke leaving the room.

Positive Pressure Zone

Positive Pressure Zone

Neutral Pressure Plane

Airflow

Airflow

Neutral Pressure Plane Neutral Pressure Zone

Neutral Pressure Zone

Airflow

Airflow

3