Tie Down 18 in. Bolt-On Commercial Roof Anchor, 11 in. x 11 in. Base - 70870-L11
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Tie Down 18 in. Bolt-On Commercial Roof Anchor, 11 in. x 11 in. Base - 70870-L11
The Tie Down 70870-L11 is an 18 in. bolt-on commercial roof anchor with a compact 11 in. x 11 in. base that is 3/8 in. thick. It is compatible with wood, metal and concrete substrates and passes through the roof to stay accessible throughout construction and beyond. Galvanized steel conforming to ASTM standards and USA manufacturing ensure long-term reliability.
Key features
- 18 in. post height
- 11 in. x 11 in. base, 3/8 in. thick
- Bolt-on attachment
- Fits wood, metal and concrete substrates
- Galvanized steel conforming to ASTM standards
- Usable for window washing tiebacks in most cases
- Made in the USA
Ideal applications
- General commercial roof fall protection
- Window washing tieback anchorage
- Anchors installed during construction for later maintenance
- Horizontal lifeline systems for perimeter work
Why buyers choose this product
The compact base fits between roof structural members while the 18 in. post provides good clearance. It is a solid all-purpose choice from the CRA line.
Specifications
| Brand | Tie Down |
| Product type | Commercial roof anchor (CRA) |
| Dimensions (L x W x H in.) | 11 x 11 x 18 |
| Weight (lbs) | 23 |
| Post height | 18 in. |
| Base plate | 11 in. x 11 in., 3/8 in. thick |
| Attachment | Bolt-on |
| Substrates | Wood, metal, concrete |
| Material | Galvanized steel conforming to ASTM standards |
| Country of origin | USA |
Additional product details
Riser heights across the Tie Down CRA series range from 8 in. to 36 in., so you can match anchors to roof build-up. See the sell sheet for full details.
Order the Tie Down 70870-L11 for a dependable bolt-on roof anchor.
Documents
MFG Part #: 70870-L11
| Product Type | Fall Protection Anchor |
|---|
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.

