Returns and shipping

We offer a 30-day money back guarantee, excluding processing and handling charges, on products purchased directly from us.

To qualify, products must be returned in unopened boxes. Opened items are not eligible for return.

You will need proof of purchase — a receipt, bill of sale, or the UPC code from the package — within 30 days of receiving your order.

If you bought your item from a retailer such as Walmart, Target, or Amazon, that retailer's return policy applies and the item has to go back to them. We cannot accept returns on purchases made through another store.

Email custserv@nsi-int.com with your order number and proof of purchase, and we will send return instructions. We aim to respond within 48 hours on weekdays.

Please do not ship anything back before you hear from us — returns sent without instructions may not be processed.

Once your return arrives and is inspected, we will email you to confirm. Approved refunds go back to your original payment method, minus processing and handling charges.

Depending on your bank or card issuer, it can take a few business days for the credit to appear on your statement.

If your item arrives damaged, stops working, or is missing a part, contact us before starting a return. Many issues are solved with a replacement part, and we would rather fix the problem than have you ship the whole thing back.

Have your item number ready — it is printed on the bottom of the box.

Warranty coverage varies by product and is described in the instruction manual included with your item. You can also download manuals from our instruction manuals page.

Warranties cover manufacturing defects. They do not cover normal wear, accidental damage, or misuse.

Orders are processed on business days, excluding holidays. You will receive a confirmation email with tracking as soon as your order ships.

Delivery times are estimates provided by the carrier and are not guaranteed. We are not responsible for carrier delays once a package has left our facility.

Shipping costs are calculated at checkout based on your address and the size of your order. Processing and handling charges are not refundable.

We currently ship within the United States only.

Please double-check your shipping address at checkout. If a package is returned to us as undeliverable because of an incorrect address, we can reship it once you cover the return and reshipment costs.