Poly is experiencing a part shortage that is causing 6-8 weeks of lead time for some headset models. BTP will communicate the lead time for your line items and do our best to suggest alternate models depending on the stock availability. We appreciate your patience.

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Ear Cushion, Foam for Legacy Supra & Encore – Qty 100



Who we are logo, BTP representative with headsets

Every order includes unlimited lifetime support from our Headset Helpdesk, saving you time and money.

Foam Ear Cushions for Discontinued Supra and Encore Series

  • Fits all legacy corded Supra and Encore headsets
  • Solid foam style ear cushions
  • Also for Blackwire C300 & C3200 series USB headsets
  • Not for wireless SupraPlus headsets
  • Measures 2 1/4 inches in diameter
  • Made of hypo-allergenic foam
  • Pack of 100
  • Genuine Plantronics accessory
BTP Model: PL-15729-100
MFR Part: 15729-100

Additional information

Weight 0.375 lbs
Dimensions 10.00 × 8.50 × 4.25 in


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Our Unmatched, Value-added Service Saves You Time, Money and Hassles:

  • Experienced consultants help you choose exactly the products you need, preventing unnecessary purchases
  • Free user setup help and training
  • 100% satisfaction guaranteed
  • Our team is committed to answering every call live during business hours
  • Same-day response to emails
  • Same-day shipping
  • Full warranty facilitated by BTP


For customer service, sales inquiries, and technical support, contact us Monday“Friday, 8-5 Pacific Time. (After-hours messages and emails are promptly returned the following business day.)

Call: 800-457-4287 or 425-649-9262

Email: info@btpi.com

Special order, 1-2 weeks.

Sometimes this item is not in stock, due to low demand. In this case, expect a phone call or email from BTP Customer Service letting you know the estimated ship date.

If your order includes other products that are in stock, we will give you the option of waiting until all items are in stock to receive your order, or you may request a partial shipment of in stock item(s) with the special order item(s) to follow when available.

BTP does everything possible to eliminate delays and unnecessary expense associated with returns. At least two members of the BTP team will review your order for accuracy. If we have any questions or concerns about your order, such as two incompatible products, we will contact you right away.


“That was so very kind of you!  25 years!  Wow!  I had no idea.  I will say that you and your employees have been nothing but accommodating and wonderfulRead more

Gwendolyn C., Olympia, WA