Universal Reducer or Transition Diffusers & Returns

Universal HVAC Reducers, Transition Diffusers & Returns

Kit includes one White Plastic 2'x2' Air Diffuser or Return with a 14" neck, one Universal Reducer, one 48" Cable Tie.

Be prepared for any duct size from 6" thru 14".

Stock the Universal Collar Kit and reduce prep time, install time and frustration.

Reduce Inventory

  • Stock one neck size - 14"
  • Scales down 14" neck to 6", 8", 10", or 12"

Reduce Prep Time

  • No measuring & counting
  • No running out of neck sizes
  • Quickly adjust reducer onsite with needle nose pliers.

    Reduce Install Time

    • Snaps onto neck and holds tight, no need to tie it on or use screws.
    • Rigid plastic won't collapse during install like rubber product.

    Reduce Frustration

    • Unique Strapping Ridge prevents slip off when reducer is strapped onto the duct.

Kit:14" White Plastic Cone(4945W),Universal Collar(NRD),48" ZipTie(4945-Tie) - 1800ceiling

Kit:14" White Plastic Cone(4945W),Universal Collar(NRD),48" ZipTie(4945-Tie)

2'x2' White Plastic Cone Air Diffuser w/ Universal HVAC Reducer Kit & 48" Zip Tie Kit includes one White Plastic 2'x2' Cone Air Diffuser with a 14" neck, one Universal...

Regular price $53.95

Universal HVAC Reducer & Transition (NRD) - 1800ceiling

Universal HVAC Reducer & Transition (NRD)

Universal HVAC Reducer & Transition Universal HVAC Reducer: Inventory 1 size instead of 5. Snap it on & convert a 14" collar diffuser into a 12" or 10" or 8"...

Regular price $19.95

Kit:14" White Plastic Return(4989W),Universal Collar(NRD),48" ZipTie(4945-Tie) - 1800ceiling

Kit:14" White Plastic Return(4989W),Universal Collar(NRD),48" ZipTie(4945-Tie)

White Plastic Egg Crate Return 14" Collar with Universal HVAC Reducer & 48" Zip Tie Kit includes one White Plastic 2'x2' Egg Crate Return Air with a 14" neck, one...

Regular price $69.95

Kit:14" White Plastic Plaque(4990W),Universal Collar(NRD),48" ZipTie(4945-Tie) - 1800ceiling

Kit:14" White Plastic Plaque(4990W),Universal Collar(NRD),48" ZipTie(4945-Tie)

2'x2' White Plastic Plaque Air Diffuser with Universal HVAC Reducer Kit (NRD) & 48" Zip Tie Kit includes one White Plastic 2'x2' Plaque Style Air Diffuser with a 14" neck,...

Regular price $55.95

Kit:14" Black Plastic Cone(4945BK),Universal Collar(NRD),48" ZipTie(4945-Tie) - 1800ceiling

Kit:14" Black Plastic Cone(4945BK),Universal Collar(NRD),48" ZipTie(4945-Tie)

2'x2' Black Plastic Cone Air Diffuser w/ Universal HVAC Reducer Kit & 48" Zip Tie Kit includes one Black Plastic 2'x2' Cone Air Diffuser with a 14" neck, one Universal...

Regular price $57.95

Kit:14" Black Plastic Plaque(4990B),Universal Collar(NRD),48" ZipTie(4945-Tie) - 1800ceiling

Kit:14" Black Plastic Plaque(4990B),Universal Collar(NRD),48" ZipTie(4945-Tie)

2'x2' Black Plastic Plaque Air Diffuser with Universal HVAC Reducer Kit & 48" Zip Tie Kit includes one Black Plastic 2'x2' Plaque Style Air Diffuser with a 14" neck, one...

Regular price $57.95

Kit:14" Black Plastic Return(4989B),Universal Collar(NRD),48" ZipTie(4945-Tie) - 1800ceiling

Kit:14" Black Plastic Return(4989B),Universal Collar(NRD),48" ZipTie(4945-Tie)

Black Plastic Egg Crate Return with Universal HVAC Reducer Kit Kit includes one Black Plastic 2'x2' Egg Crate Return Air with a 14" neck, one Universal Reducer, one 48" Cable...

Regular price $69.95