(On Products over $75) Hanna Instruments HI 141JH/2 -40 to 125C NTC "C/F" thermologger w/hook, 2 ext. Sensor, and 2m cable New - Factory Authorized Distributor - Factory Warranty 1 or 2 channels with internal or external sensor. Programmable high and low alarms
I googled the patent number and found the following info. The figures on the patent sketches looks slightly different than the piece. Patent number: US 3497806
LIFETIME INDUSTRIES REUSABLE AIR FILTER ATTIC CRAWLSPACE SCREEN LX SERIES HVAC 11x33 UNIT Up for your consideration is this LOT of 8 individual Lifetime Industries LX Series HVAC aluminum frame and screen - air and moisture filter unit(s). These can also be used for an attic or crawlspace screen, or even used as a critter resistant air vent in barns or chicken coops.
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