FL18357 – Kolbe & Kolbe Millwork Co., Inc.
Florida product approval FL18357-R4 for Windows – Double Hung, as listed in ProdApproval’s data as of Sep 29, 2026.
- FL#
- FL18357-R4
- Manufacturer
- Kolbe & Kolbe Millwork Co., Inc.
- Code version
- 2023 Florida Building Code
- Status in our data
- Approved
- Products
- 2
Official record on floridabuilding.org →Use on a spec sheet →
Verify approval status on floridabuilding.org before submitting.
Approved products under FL18357-R4
| Approval # | Model | Description | Design pressure | Wind-borne debris | HVHZ | Outside HVHZ |
|---|---|---|---|---|---|---|
| FL18357.1 | Ultra Series XL Sterling Double Hung | 48" x 120", Non-impact | +60/-65 | No | No | Yes |
| FL18357.2 | Ultra Series XL Sterling Double Hung | 48" x 120", Impact | +60/-60 | Yes | No | Yes |
Fill a spec sheet with FL18357
On the contractor form, go to the Windows – Double Hung row and type 18357 in the Florida Product Approval # box to fill the row. Walton County users can print a PDF that follows the county’s sheet; see the Walton County Product Approval Specification Sheet guide.