Circular Duct Silencers, Attenuators and Plenum Boxes
Straight and bend silencers, sound-attenuated plenum boxes and standard plenum boxes
Overview
What it is for
A circular silencer is a lined section of duct that takes fan and air noise out of the system before it reaches the room. Bend silencers do the same in a bend, where space is short.
Plenum boxes sit behind a grille or diffuser and spread the air before it comes out. Sound-attenuated plenum boxes add lining for quiet rooms; standard boxes are plain.
Length, lining and connection sizes depend on the noise target, so send the schedule from your drawings or the acoustic specification and we quote to it.
Make it yourself or buy it finished? If you run your own round duct, our SBTF-1602 spiral tubeformer and SBEM-1250 elbow machine make spiral pipe and bends in house. Many shops do both: make the high-volume sizes and buy the awkward fittings finished. See also how duct fittings are made.
More photos
Questions before you send the list?
Send a photo of the drawing schedule or the fitting you need and we tell you what to put on the take-off.
Ask on WhatsAppIn this range
- Circular silencers (attenuators)
- Round and square bend silencers
- Sound-attenuated plenum boxes
- Standard plenum boxes
- Filter boxes
- Square-to-round connectors
What we need from you to quote
- Your take-off or bill of materials (Excel, PDF or a photo of the drawing schedule is fine)
- Item, diameter and quantity for each line
- Sheet thickness, or the standard you build to, and the zinc coating (Z80 or Z275)
- Seal type: rubber-sealed or plain ends
- Delivery port, and whether the fittings ship on their own or with a machine order
Supply terms
Who supplies them. Taokron. We handle the take-off review, quotation, pre-shipment inspection, shipping and after-sales support from Melbourne.
Lead time. Production time depends on the item mix and quantity and is confirmed at quotation. As a guide, a recent mixed order of about 1,900 bends and dampers was produced in 50 working days.
Shipping. FOB or delivered to your port, quoted per order. Fittings can ship on their own or share a container with a machine order.
Price. No price list. Every line is quoted from your take-off, by diameter, gauge, coating and quantity.
Request for quotation
Send your take-off for a quotation
Paste your take-off or bill of materials below: item, diameter, quantity, gauge and coating for each line, plus your delivery port. Ryan Tao replies within 12 hours. Excel or PDF lists can go to [email protected] or WhatsApp +61 435 074 994.
Quotation for: Silencers and Plenum Boxes
Need a machine as well? Use the full inquiry form
Frequently asked questions
About silencers and plenum boxes
Do you have attenuation figures?
We confirm acoustic data per item on the quotation. Send the length and the noise reduction you need, or the schedule from the acoustic consultant.
How long does production take?
Production time depends on the item mix and quantity and is confirmed at quotation. As a guide, a recent mixed order of about 1,900 bends and dampers was produced in 50 working days.
Do you have a price list?
No. Fittings are quoted per order from your take-off, because the price depends on the diameter, gauge, coating and quantity of each line. Send the list and we quote every line.
Duct fittings
