Return policy

Returned merchandise must be clean, unused, and in original boxes. All returns must be shipped freight prepaid.

Re-stocking fees: 0-20 days after invoice date: no restocking fee; 21 to 120 days after invoice date: a 15% restocking fee will apply. Over 120 days: no return is allowed unless there is a warranty issue with the merchandise.

Incorrect usage: QPS accepts no responsibility for products used on aircraft. A unit is not certified for marine use unless labeled directly on the unit.

Other damages: Customers shall report errors, shortages or freight damage within 10 days from delivery.

Overdue charges: Invoices are due and payable as stated in the invoice. Any account over 30 days old will be subject to COD/Credit Card terms without notice. A service charge of 1.5% per month, 18% annually, will be levied on all open balances older than 30 days. Such charges will continue each month until the account is paid. Legal and collection fees will also be added.

Usage of credits: Credits not used within 12 months will be forfeited.