Marcus Bonna Alto-Tenor Trombone Case-demo model

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The Marcus Bonna Alto-Tenor Trombone case offers a maximum amount of protection for the size and weight. With room for a tenor trombone (small or large bore) and an alto trombone, it features storage for accessories in the case, removable sheet music pocket with music stand/trombone stand straps and modular interior blocks to customize the fit for every trombone. The fiberglass construction offers protection with a minimum amount of weight. Due to the demand for these cases, once they are out of stock, they may not be available for 3+ months. This case is a demo model in the shop but is in like-new condition.  Contact the Trombone Shop with any questions.

Marcus Bonna cases have become a staple in the brass community for their lightweight yet durable fiberglass design, combined with modular interiors to create the perfect fit for every instrument.

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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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