Surface Mount Backpan


When you don’t have a T-Bar system but a hard ceiling instead, you will need the Surface Mount back pan to complete the installation of the Comfort First Filtered Diffuser.  A back pan is always needed to effectively use any of the vent diffusers made by Comfort First, but knowing which back pan will work best for your infrastructure is a necessity. The Surface Mount Back Pan is made from durable materials and helps your vent diverter work to it’s best ability.


  • Durable Materials
  • Fits Various Neck Sizes
  • Easy to Install
  • Enhances Your Comfort & Air Quality

The Surface Mount Backpan provides a different setup from most back pans that you’ll find. Created specifically for establishments that don’t have a T-Bar system, but rather a hard ceiling, this type of back pan is needed to complete the installation of the vent diffuser in the first place. With its high quality and durable materials, this back pan is able to create a solid structure that makes it so air leaks are a thing of the past. If you’re looking for this type of back pan, we can guarantee you won’t find one as great as this. Check below for dimensions to see if it’s the right fit for you.

Benefits for your office:

  • Tight Seal For System
  • Sleek Look
  • Higher Efficiency


  • 23.75 x 23.75 x 1 inch

Additional information

Weight 12 lbs
Dimensions 23.75 × 23.75 × 1 in

How do I choose a back pan?


Selecting a back pan is determined by the type of ceiling your office has and what size the neck is that attaches to the duct work.


If you have a standard perforated diffuser that has pins holding the screen in place a ½” from each corner of the back pan, you may be able to use this back pan for the installation.  If you have any other style diffuser you will need to buy one of our 3 back pan options.


Option # 1

The powder coated steel back pan is used in standard T-bar suspended ceilings. Prior to ordering you need know the round neck size that your duct work will attach to.  They are available in 6”, 8”, 10”, 12”, 14” and 16” round.


Option # 2

The fiberglass back pan is for use in T-bar suspended ceilings for multiple installations when you don’t know the neck size.   It can save time to buy the fiberglass covered steel back pan and take various sized start collars and duct sealant with you on the job.  Most contractors and facility managers can purchase start collars from their local HVAC supply house.  This back pan allows you to use start collars at the job site and cut the fiberglass to the neck size desired using tin snips or utility knife.  This type of installation normally needs an HVAC contractor or skilled facilities HVAC technician.


Option # 3

The Surface Mount back pan is for use in hard ceilings; plaster or drywall.  It is mounted onto the ceiling and the diffuser fits inside this back pan.

All the back pans allow the diffuser to hinge down for easy filter replacement.



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