Roof drains have four different methods for height adjustment. Available options include a fixed extension, threaded adjustment with sealant, adjustable extension rods, and threaded O-Ring adjustment. Options are available for top-level adjustment to accommodate various insulation thicknesses.
Hospeco Brands Group: EvoGreen All-Purpose Cleaner & Degreaser
Clopay Corporation: TruCycle Service Door
Global Drain Technologies: Elevator Drain Series
Russelectric: RTS-30 Series
J+J Flooring: Ume