- Bases made of high density polypropylene plastics & other
additives for UV protection
- Weight of base: 7 lbs. each
- Base dimensions: 18"x18"x3"
- Frames manufactured from B22TH 1 5/8" strut and BTS22TH 1 7/8"
strut, .125-.250W when telescoped
- HDG or stainless steel threaded rods, nuts, washers
- Width & height of duct, as well as off-the-roof to
bottom-of-duct elevation according to specification
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