Equipment reference / P728
P728: plug-end spring dimensions, tension and package scope
Read the complete P728 source specification, including wire size, stretch limit and quantity-dependent load statement.
Identification details & limits
Reference identifier: P728. Compare each listed detail with the exact product and the source document. Do not submit a personal serial number or access code to this website.
- GAS Hardware spring source: P728Product heading, Description and Additional information specifications · checked 2026-09-13 · GAS Hardware
| Exact source label and package | P728; the visible title describes a pair of plug-end extension springs.
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|---|---|
| Length over coils | 28 inches
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| Wire specification | 0.177 inch (No. 7 wire)
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| Outside diameter | 1-5/16 inches
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| Initial tension statement | 110–120 lb
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| Maximum allowable stretch statement | 18.5 inches
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| Quantity-specific supplier load statement | The supplier separately states two P728 springs for 90–150 lb doors and four P728 springs for 150–300 lb doors.
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| Selection boundary | These are supplier-stated specifications, not a physical test or a verified match to a particular door. Keep the spring quantity and all stated limits together; no extrapolated load rule, winding instruction or installation procedure is supplied.
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Sources & review dates
- GAS Hardware spring source: P728GAS Hardware · US · checked 2026-09-13
This independent reference preserves the source’s stated scope. It does not report an Anderson installation inspection, product test or safety clearance.
The cited sources define the product details shown here; comparison does not establish fitment. Anderson’s repair service covers its listed Connecticut communities; this national reference does not imply nationwide service.