The original Hi-Lo company went out of business in 2010. Another group purchased the rights to the name (and engineering plans as I recall, but don't hold me to it) and have started making Hi-Los again. I believe they only offer 1 model at the present, but again, don't hold me to that.
Most RV parts (and appliances) are generic and can be found at various RV supply houses. Additionally, some employees of the original Hi-Lo company went into business for themselves when the original Hi-Lo company closed. They had worked there for years and purchased a lot of the remaining parts which are offered for sale, and they also do expert repair. You can find these two businesses at:
J and R Trailer Repair:
Home - JR REPAIR
and: Midget RV & Trailer Service
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