Need Marvin quartz tubes

replaced the rotary switch with a double poll single T. this makes the heater a 1500 watt with no 750 watt option.

Contact Quartz Infrared, Inc. They are making Marvin elements, but the standard model will not fit this unit. They would be happy to help you.
http://www.quartzinfrared.com/contact.php

Marvin replacement elements are available from Quartz Infrared, Inc for $17.95. You can order them directly here:
http://www.quartzinfrared.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=Marvin

try this web link look for quartz tubes.
http://www.infraredheaters.com/quartz1.htm

Yes, I got my Marvin, model 500 quartz heater fixed, thank you. Please discontinue further communication.

Marvin replacement elements are available from Quartz Infrared for $17.95.
http://www.quartzinfrared.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=Marvin

Very simple to install the replacement element. Insert one end of the element into the bottom receptacle on either side, press the element down (it's spring-loaded), then slide the top of the element into the center opening of the top receptacle, push to appropriate side (the side of receptacle, same as the bottom), then release. Then do the same with the other element (if both are out).

On Monday, 1/21/08, I returned the Marvin 2060 heater to the store I purchased in 02/07 since the freeze guard stop working. The owner left me a voice message at home and said he after doing some research, he discovered Marvin went out of business in 12/07.
And the heater is no longer covered under the warranty. The owner gave me a telephone number, 800.326.3690 which carry the parts for Marvin Heater. I have not called the number since I am looking for another heater with the freeze guard feature since it something I need quickly.

try this place - they have replacement quartz elements maybe you can find one here.
http://www.infraredheaters.com/quartz.htm