i know this is older but i would rather less, more useful, threads on a given topic then too many scattered ones.
what do you guys think of using these floor mats to do large shelf bottom heat?
Indus-Tool FWB 16-by-36-Inch Foot-Warmer Mat vs the product that is designed for it like
Hydrofarm Seedling Heat Mat 48x20
both seem waterproof, 90-120watts vs 107watts respectively so the specs seem similar, though since the are described for such different uses it is hard to tell how similar the heat they put out are, my gut says the floor one is probably warmer. i have a windowsill plant one now and although i know it works it is very subtle to the touch, cant see it working thru shoes under a desk for instance. the floor matt one seems like it would be sturdier, but in my particular case the plant one does fill my shelve a bit more perfectly. i have most my plants on 48x18 metro racks, although i have been working on adding some drain trays to the shelves that would also make them wider than the 18 by a bit.
my plants are about to go from their summer home on a shaded deck to my first small 4x10ft lean too greenhouse that is adjacent to a sliding glass door and therefor my home. Im looking into various ways to heat it the best and to have some redundancy in the system.
heat mats seem to have a number of benefits in the whole plan.
lastly, Ray, do you get these larger 48x24 mats? Can you beat this price is i ordered maybe 4 of them?