Q: Is this product available without the cable hook-up; is it compatible with Fresh-Aire AHU Series 1 systems (i.e., I want the bulb only)?
If you are just wanting the lamp or bulb, please see part number TUVL-215 or follow this link here: https://www.trutechtools.com/TUVL215E
In all the AHU units you will need to have the pigtail (cable hook-up) which is part number TUVL-215P, or the item you are looking at now.
Q: Can this lamp be used with the same mounting bracket and pigtail as the TUVL-115?
Yes, you are able to use the same mounting bracket and pigtail as the TUVL-115.
Q: Is this an OEM part made in the USA?
Yes, this bulb is an OEM part and is made in the USA. TruTech Tools is an authorized distributor of FreshAire/Triatomic products.