4" Universal Filter Rack Assembly
4" Universal Filter Rack Assembly
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4" Universal Filter Rack
-16"X25"X4"/ -16"X24"X4" / -16"X20"X4"
-20"X24"X4" / -20"X25"X4"/ -20"X20"X4" / -24"X24"X4"
-14"X25"X4" / -14"X24"X4" / -14"X20"X4"
- Easy installation with direct screw attachment to your furnace or air handler
- Convenient access to the filter compartment, featuring two knurled screws for removing the filter door.
- 1" flange on all four sides for seamless connection to existing or new return air ductwork














Complete Your Project
Find all the key parts you need to finish your project right here. From fittings and connectors to custom components, we’ve got everything to help you complete your work quickly and reliably. Whether it's for ductwork, or general assembly, these durable, quality parts are built to get the job done. Shop our selection and get the right solutions to wrap up your project efficiently.
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Let customers speak for us
from 26 reviews
Excellent

I have purchase plenty of ductwork thought my years and this is for sure the best, fastest shipped ductwork available online. Ordering is straight forward and simple. I thought that it would take a week to arrived but much to my surprise it was shipped the next day. Words cannot express the satisfaction you will have ordering ductwork from them. I give them a rating of AAA+++.

I bought most of my ductwork local had to get this adapter from ductwork direct it was higher quality than the stuff I bought locally. Fast shipping as well!

Perfect fit

Very attentive customer service , fast reliable shipping.

great service and fast delivery

I was really surprised at how quickly I received my order.

Looks great… timely service

Nice selection fast delivery

The size is exactly what I order.
Good price

The duct coupling sleeve worked great. If the bolts were 1/4" it would have been perfect but I was able to make it work.

First time ordering from this company, very easy compared to some of the others I’ve dealt with

The duct connector fit well and was easy to install. The shipping was prompt and the price was fair. Thank you.

Fits my furnace perfectly, good product, good price, fast shipping

Perfect fit..thank you
Fast shipping