Miller DuraHoist Upper Mast - DH-21
**No Longer Available** Call 614-449-9600 for Alternatives
Miller DuraHoist Upper Mast - DH-21
Upper Mast
The two piece mast system comprised of the DH-21 and DH-22 Lower mast extensions are designed to provide additional solutions to height-restrictive applications than the DH-3 one-piece mast alone. The two-piece mast system allows use of components in various configurations and applications. Multiple winches and/or self retracting lifeline systems may be mounted as required. Tool-less design breaks the system into lightweight, manageable components for storage, transport, and setup.
Upper Mast
Two-Piece Adjustable Mast
- Mast offset adjusts from 12-in. (0.30m) to 29-in. (0.74m)}
- Compatible with any two Lower Mast Extensions, not exceeding a combined 90-in. (2.29m) in height for the DH-21/ or78- in. (1.98 m) for the DH-23
Adjustable Mast Options
Designed for manhole and confined space entry/retrieval and fall arrest applications
System breaks down into four lightweight aluminum components for easy storage, transport and set-up. No tools required for assembly.
Modular design allows the use of various fixed and portable bases and an optional mast with extensions. Multiple winches and/or lifeline systems may be mounted as required.
Suggested Applications:
Public Utilities: Vault and manhole entry, pump/lift/valve stations, water treatment and wastewater industries
General Industry (Food, Chemical, Pulp & Paper): Elevated manholes, storage tanks, platforms/mezzanines, underground vaults, clarifier tanks, pre-heaters
CATEGORY: Masts & Mast Extensions
UPC: 612230156367
| Product Type | Fall Protection Confined Space |
|---|
Shipping
We Ship Internationally - We can ship to virtually any address in the world, with some restrictions on certain products.
Standard Delivery: Ground shipping typically delivers in approximately 5 business days from our Columbus, OH warehouse.
Expedited Options Available:
- Priority and Expedited handling speeds up processing
- Overnight shipping available (guaranteed) - must order by phone before 12pm EST M-F
- Some items ship "Manufacturer Direct" and cannot be expedited
Important: Inspect your delivery before signing! Note any damage on the shipping document.
Returns Policy
30-Day Return Window: Most new, unopened items can be returned within 30 days for a full refund.
Non-Returnable Items:
- Made-to-order fall protection products
- Used vacuums, respirators, gas monitors, or air scrubbers
- Calibration gas (hazardous material)
- PAPR and specialty respiratory items (non-stock)
Restocking Fee: 30% restocking fee or shipping costs apply if return is due to buyer error.
Refund Timeline: Expect refunds within 4 weeks, though many are processed faster.

