Thermal Performance Database


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.

To fit this wide chart to the width of your monitor, use the Zoom control feature by holding down your keyboard’s Ctrl key and then:

  1. Pressing the “+” or “-“ keys on your keyboard, or
  2. Moving your mouse scroll wheel up or down.

To print the screen you are viewing, click the printer icon in the upper right corner of your monitor screen. When you click it, the software will create a table in pdf form. Be sure to use enough Search Tool filters to reduce the screen results to 50 or fewer matches. This practice avoids creating a pdf with thousands of lines.

Search Tool Definitions below will help explain the terms and information found in the table.

Find ODL doorglass products thermal performance in the NFRC CPD

Search Tool Definitions

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

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.

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.

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)

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


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.
  • (3): Describes the surface of the IG which has Low-E on surface #3. This is the case when customers choose to reverse the orientation of our IG.

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

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".

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

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


*A special note about customer-specific jargon shown in the MPC column: Door manufacturers are allowed to write anything they wish in the MPC column and frequently use jargon specific to only that manufacturer. As such, it can be confusing trying to decipher the jargon. Here is a partial list of that jargon with an explanation for each.

Many manufacturers end their descriptions with either W/N, W/T, S/N, S/T, C/N, C/T, etc.

  • The letters W, S, or C describe the type of jamb as Wood, Steel, or Composite.
  • The letters N or T describe the sill as either Thermally Broken or Non-thermally Broken.

JELD-WEN includes many different door constructions within each of their list.

  • They include 3 types of foam within the door as EP (Expanded Poly foam), NP (Neoprene foam), and PU (Polyurethane foam).
  • They include 3 types of stiles within the door as NS (Narrow Stile), WS (Wide Stile) and WSS (Wide Stile w steel reinforcement).