Nortek 2100-1725 Replacement Spacer

Overview

The Nortek 2100-1725 is a tubular spacer sized 3/4in OD x 1/2in ID x 75in length, identified in manufacturer part records by the LTB suffix used on Nortek's spacer line. It is listed here as an end-of-life (EOL) part number — Nortek has discontinued production of the 2100-1725, and availability is limited to remaining channel stock. Manufacturer documentation with performance specifications, material composition, or application data for this part number was not available at the time of writing, so this listing is intentionally kept brief rather than guessing at attributes that cannot be verified.

Key Details

• Discontinued status: 2100-1725 is marked EOL by Nortek. If you're sourcing this for a repair or retrofit, confirm remaining stock before committing a project timeline to it — once current inventory is gone, this exact part number will not be replenished.
• Dimensional identity: the 3/4in OD x 1/2in ID x 75in callout in the part name is the primary way to cross-reference this spacer against a replacement or equivalent part if 2100-1725 becomes unavailable.

Integration & Compatibility

Because manufacturer fitment and compatibility documentation for the 2100-1725 (often searched as 2100 1725) isn't available in verified form, confirm compatibility directly against your existing Nortek assembly's part diagram or bill of materials before ordering, rather than relying on the dimensional description alone. If you're standardizing hardware across a larger install, it's worth checking Nortek's current catalog for an active, non-EOL spacer in the same size family before locking in a design around a discontinued part.

Frequently Asked Questions

Q: Is the Nortek 2100-1725 still in production?

A: No. The 2100-1725 is marked end-of-life (EOL) by Nortek. Availability is limited to existing channel stock.

Q: What are the dimensions of the 2100-1725 spacer?

A: 3/4in outer diameter x 1/2in inner diameter x 75in length, per the part naming.

Q: Can I get a direct replacement for the 2100-1725 once stock runs out?

A: That isn't confirmed in available documentation. Check Nortek's current catalog for an active spacer in the same dimensional family, and verify fitment against your assembly's part diagram.

Karl Wilson

The 2100-1725 is one of those parts you only search for when you're already mid-repair on a Nortek assembly and need the exact 3/4in OD x 1/2in ID x 75in spacer to match. The main thing to flag on this one is status, not spec.

Technical Highlights:

• EOL status: Nortek has discontinued the 2100-1725. Treat remaining stock as finite — there's no manufacturer restock coming on this exact part number.
• Dimensional callout: 3/4in OD x 1/2in ID x 75in length is the identifying spec baked into the part name itself, useful for cross-referencing if you need to source an equivalent later.
• Documentation gap: no verified manufacturer spec sheet was available for this part number, so I'm not going to guess at material or load ratings I can't back up.

Deployment Considerations:

• If this spacer is a line item in a larger repair or BOM, confirm quantity needs up front — reordering later may not be possible once current stock sells through.
• Watch out: because this is EOL, don't design a repeatable maintenance process around this exact part number. Identify a current, active Nortek spacer in the same size class as your long-term standard.

Best fit: a one-time repair or retrofit on existing Nortek equipment where the 2100-1725 (2100 1725) is the exact called-for part — not a build you plan to replicate long-term.