The SMACNA Testing and Research Institute verified cable suspension systems from Griplock Systems are an acceptable alternative to the duct hanger systems prescribed in the SMACNA HVAC Duct Construction Standards (HVAC-DCS), 4th edition, Chapter 5, Tables 5-1, 5-1M and 5-2. These hanging systems are easier and faster to install than traditional HVAC hangers and straps, saving time and labor costs.

*see DOC’s 750 SD or similar alternative guidelines for metal deck load rating
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Return Policy
NO RETURNED GOOD SHALL BE ACCEPTED WITHOUT A RETURN MERCHANDISE AUTHORIZATION (RMA) ISSUED BY GRIPLOCK.
Griplock®, at its sole discretion, may accept returns under the following conditions:
Goods are Stock items.
Goods are returned at Buyer’s expense.
Goods are returned within 15 days from the issuance of an RMA.
Goods were purchased within the 30 days previous to the issuance of an RMA.
Goods are deemed re-saleable.
Goods are unused and undamaged.
Upon inspection and acceptance of goods by Griplock®’s Quality Control Department, a Credit Memo will be issued. Credit Memos shall then be applied to future orders only, not to existing invoices. Credit must be redeemed within 1 year from the date of the Credit Memo. There will be no cash refunds. All returned goods are subject to a re-stocking charge. The schedule of re-stocking charges is as follows:
Bulk-shipped stock items – 20%
Bulk-shipped assemblies of stock items – 30%
Packaged sets of stock items – 35%
Proprietary or custom parts – 40%
Kits that include power cord – 50%