Thermal Performance Database

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Overview

Building code compliance may require knowledge of the U-Factor and Solar Heat Gain Coefficient (SHGC) of a door and doorglass combination. The Certified Products Directory (CPD) listed on the National Fenestration Rating Council (NFRC) website lists the U-Factor and SHGC of thousands of door with door glass combinations. However, due to the complexity of the CPD, it can be challenging to navigate and find the information you require.

To make the process of finding the thermal performance of doors easier, ODL has developed a search tool for the CPD. This tool contains filters to help narrow the search by size, function, manufacturer, doorglass type, and type of Low-E glass. It is important to note that the results from this search are not 'live'; the data is downloaded from the CPD to this tool once per week and may be subject to change. The data gained from this search should not be utilized for the purposes of creating NFRC labels. Contact your local inspection agency to learn more about certification labels.


Search Tool Navigation

For the best results, use the following sorting filters to narrow your search. The "# Records" field at the top right corner of the page will track the number of records that your search produces. Search Tool Definitions will help explain the terms and information found in the table.

Open the Thermal Performance Database Tool in a new window.


Search Tool Definitions

Use the following definitions for an understanding of key fields in the search tool:

CPD
The certified product directory number (CPD Number) for each door/doorglass combination that has been assigned to the door manufacturer. Note: a door pre-hanger who has their own CPD list may have their own unique CPD numbers assigned to each door/doorglass combination.

MPC
The manufacturer's product code, which describes each unique door glass.

Door Type
A description of the door. The letter/number shown next to the description has been assigned by fenestration officials and is frequently used by industry professionals to distinguish doors from one another.

Glass Series
Refinement of the glass family description.

Spacer
The material that binds panes of glass together to form an insulated glass (IG) unit. Examples include:

  • Box aluminum, single sealed (A1-S)
  • Box aluminum, double sealed (A1-D)
  • Intercept (CU-D)
  • Duraseal (A8-S)
  • Decoseal, single sealed (A5-S)
  • Decoseal, double sealed (A5-D)
  • Superspacer (ZF-D)
  • Cushion Edge (ZF-D)
  • Cardinal XL-Edge (SS-D)

Size
Description of door glass by size of glazing area (1/4, 1/2, 3/4, and full-lites).

Low-E
Description of the type of glass and its unique emissivity performance value. Examples include:

  • None: Clear glass
  • 0.148: AGC EP-S/Custom Select 73 hardcoat Low-E
  • 0.041: AGC TiAC-40/Custom Select 40 softcoat Low-E
  • 0.027: Guardian 71/38 softcoat Low-E
  • 0.037: This is Cardinal 270 softcoat Low-E
  • (2): Describes the surface of the IG to which the Low-E coating is applied. ODL applies the Low-E to surface #2.

Grid
There are three options for grilles in door glass:

  • N: No grille, also known as a 1-lite
  • G: Grilles between glass, also known as a GBG or muntins
  • S: Grilles on the exterior surface of the glass

Divider
Describes the width of the GBG or exterior grille:

  • 0.75 is any grille narrower than 1"
  • 1.5 is any grille 1" or wider

Gap 1, Gap 2
The air gap between the panes of glass. Each pane of glass is typically 0.125" thick, so the air gap for a 1" IG with two panes of glass will be approximately 0.750" to 0.760". Impact-rated IG's will have a pane of glass that is approximately 0.340" in addition to a standard pane of 0.125".

U-Factor
Describes the resistance of the door glass to conducting heat and cold through the unit. Lower values have greater insulating qualities.

SHGC
The Solar Heat Gain Coefficient describes the ability of the door glass to block heat caused by sunlight from heating a building's interior:

  • A higher SHGC allows more heat into the building, which is desirable in northern climates
  • A lower SHGC allows less heat into the building, which is desirable in southern climates