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Via E-mail: E-mail to

SALES: Hours: 8:00 am - 4:00 pm, Monday - Friday, Pacific Standard Time
Phone: 800-421-1587 Ext. 7128

Returns and RMA's only: please send e-mail to

Visit our Web sites for additional product information:

Payment Methods
Shipping Information
Sales Tax
Returns & RMA's

Payment methods

MTExpress® gladly accepts Visa and MasterCard credit cards. If for any reason an item is on back order you will only be charged for items shipped. The name "Linear LLC/MTExpress" will appear on your credit card statements.

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Shipping Information

For UPS Next Day Air, 2nd Day Air, or 3 Day Select delivery orders, our goal is to ship most in-stock orders the same day when placed by 12:00 p.m. (noon Pacific Standard Time) Monday - Friday (holidays and weekends excluded). For orders requesting delivery by UPS Ground, we'll ship most in-stock orders by the next Business day (typically 48 - 72 hours from receipt and credit approval of order). For customers requiring AM delivery, please call 800-421-1587 Ext. 7128. MTExpress® cannot ship products to PO Boxes, AP and APO addresses.

Canada: Please note that it is the customers responsibility to pay other fees, import taxes, etc. that may apply in your area.

We do not accept any International orders at this time.

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Sales Tax

Internet sales tax will be charged to all retail orders shipping to California and other states (if applicable). Prices, specials, and product availability are subject to change at any time without notice.

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MTExpress® values its customers and visitors and respects their privacy. We will not share any of your personal information that you provide us when making a purchase through our online store. If our information practices change in the future, we will let you know by posting the policy changes on our Web site before any new policies formally take effect.

Misuse and fraud protection:

Credit card fraud is a felony and you can be prosecuted for using somebody else's credit card number. All electronic and Internet transactions are being tracked by our company to assure the security and protection of our customers.

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Returns and RMA's

M&S Systems Door Stations, AirVac, Keepsafer - Returns must be made within 30 days of purchase for refund or replacement. We request that you contact us first at We'll refund your purchase price, minus shipping costs, minus 25% restocking fee.

You are responsible for shipping the complete product back to us. Returned products must be in new condition with the factory packaging and your receipt. Product returns will not be honored for missing accessories or for products used beyond manufacturers' specifications or modifications.

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Typographical Errors

In the event a product is listed at an incorrect price or with incorrect information due to typographical error in pricing or product information, MTExpress® shall have the right to refuse or cancel any orders placed for a product listed at the incorrect price. MTExpress® shall have the right to refuse or cancel any such orders whether or not the order has been confirmed and your credit card charged. If your credit card has already been charged for the purchase and your order is canceled, MTExpress® shall immediately issue a credit to your credit card account in the amount of the charge. This includes changes in policies or promotions that are reflected in the most prominent areas on the site, even when some unchanged advertisements or descriptions have not yet been updated.

MTExpress® assumes no liability for the use of any information posted or for the use of any product or service described on this Web site.

This site and its contents, unless specifically noted, are copyright Nortek Security & Control LLC © 2016. All rights reserved. Manufacturers' logos or trademarks are copyright by their respective owners.

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