Commercial and retail pricing for fiberglass windows tracked across major U.S. distributors. Updated weekly.
Fiberglass Windows range from $84 to $715 at retail pricing in 2026, with a median of $293. At commercial (contractor/trade) pricing, the range drops to $50 to $536 with a median of $198.
Most fiberglass windows purchased for commercial construction projects fall in the $85 to $328 range (25th to 75th percentile, commercial). Commercial pricing is typically 25-30% below retail, available through distributor trade accounts.
Size is a pricing factor for fiberglass windows. 1X72 offers the most affordable option at a median commercial price of $68. 48X74 commands the highest median at $653.
Options span a wide range: 36X48 sits at $229 median while 24X64 runs $295.
| Size | Low | High | Median |
|---|---|---|---|
| 24X38 | $147 | $244 | $219 |
| 18X36 | $229 | $536 | $459 |
| 19X45 | $229 | $287 | $258 |
| 24X36 | $76 | $95 | $85 |
| 24X64 | $194 | $536 | $295 |
| 36X48 | $173 | $536 | $229 |
| 1X72 | $61 | $95 | $68 |
| 30X48 | $237 | $536 | $280 |
| 48X74 | $653 | $653 | $653 |
Origin affects fiberglass windows pricing. Turkish fiberglass windows offer the lowest median at $80, while European products command $324.
Other origins include USA ($210).
| Origin | Low | High | Median |
|---|---|---|---|
| USA | $60 | $490 | $210 |
| Europe | $106 | $536 | $324 |
| Turkey | $50 | $450 | $80 |
These prices represent the market as we track it from distributor catalogs. Flume's procurement platform sources directly from manufacturers and leverages cross-project volume to deliver pricing 20-50% below the commercial rates shown here, without sacrificing product quality or specification compliance.
For details on how we calculate these prices, see our methodology. View all categories on the Price Index overview.
Fiberglass Windows range from $84 to $715 at retail pricing in 2026, with a median of $293. At commercial (contractor/trade) pricing, the range is $50 to $536 with a median of $198.
Commercial fiberglass windows pricing is typically 25-30% below retail. The median retail price is $293 compared to $198 commercial. Contractors, builders, and trade accounts qualify for commercial pricing through distributor relationships.
Size has a measurable impact on fiberglass windows cost. 1X72 fiberglass windows have a median commercial price of $68, while 48X74 runs $653 median. Choosing the right size based on project requirements can meaningfully impact material budgets.
Yes. Turkish fiberglass windows have a median commercial price of $80, while European products run $324. Origin-based pricing differences reflect manufacturing costs, shipping, and tariffs.
Flume sources fiberglass windows directly from manufacturers and leverages cross-project volume to deliver pricing 20-50% below the commercial rates shown here. Submit your specs and quantities for a free quote. Results in 2-4 days with no commitment required.
Send us your fiberglass windows specs and quantities. We source directly from manufacturers and leverage cross-project volume for pricing 20-50% below distributor rates.