It looks like you’re inquiring about the Orvis Fly Reel Case Spool / Management (AP3947/81). Here’s what I could find:

Orvis Fly Reel Case Spool (AP3947/81)

Orvis Fly Reel Case Spool / Management Ap3947/81

– This appears to be a replacement spool or case accessory designed for Orvis fly reels.
– The AP3947/81 is likely a part number or model reference.
– It may be used for storing spare spools or organizing fly line backing.

Possible Uses:
1. Spare Spool Storage 鈥?Holds extra spools for quick line changes.
2. Fly Reel Protection 鈥?Helps protect reels when not in use.
3. Line Management 鈥?Keeps backing and fly lines organized.

Where to Find It:
– Check the Orvis official website ([www.orvis.com](https://www.orvis.com)) under “Fly Fishing Accessories” or “Reel Parts.”
– Contact Orvis Customer Service for exact specifications or availability.
– Look on fishing gear retailers (e.g., Amazon, eBay, or specialty fly shops).

Alternative Solutions:
If this exact model is discontinued, consider:
– Universal fly reel cases (e.g., Fishpond, Simms).
– 3D-printed or custom spool holders (if you need a DIY solution).

Would you like help finding a current replacement or verifying compatibility with a specific reel model? Let me know! 馃帲