Different product series
A manufacturer may offer builder-grade, signature and premium collections. Each line can provide different configurations, sizes, design options and performance features.
Impact Windows and Doors Guide
Two proposals can look similar while specifying completely different product lines. Before comparing prices, learn how to identify the manufacturer, model and series included in each quote.
The total at the bottom of a proposal does not tell you whether two contractors quoted the same product.
Manufacturers often offer several product lines designed for different priorities, configurations and budgets. One proposal may include an entry-level window, while another includes a signature or premium series—even when both are described simply as “impact windows.”
This is why comparing price alone can be misleading. A meaningful comparison requires checking exactly which models were specified for each opening.
A proposal may also mix product lines. For example, the windows could come from one tier while the entry door comes from another. Each model should be reviewed separately instead of assigning one label to the entire quote.
Look beyond the total
Price differences do not automatically mean that one contractor is overcharging or that the least expensive proposal offers the best value. The quotes may include different products, specifications and scopes of work.
A manufacturer may offer builder-grade, signature and premium collections. Each line can provide different configurations, sizes, design options and performance features.
Glass type, tint, energy-efficiency options, frame color, hardware and finish selections can change the proposal even when the basic window style appears similar.
A fixed window, casement window, horizontal roller and architectural shape are not interchangeable. Product type and opening size must be compared line by line.
Permits, removal, installation method, finishing work, opening modifications and other project details may not be included equally in every proposal.
The simplest rule: if the manufacturer, model number, configuration and project scope do not match, the proposals are not yet an apples-to-apples comparison.
Read the proposal line by line
Proposal formats vary, but the details needed for a useful comparison are usually found in the product description for each window or door. Look for these four items before evaluating the total price.
Look for the company that makes the product—not simply the name of the contractor providing the proposal.
It may appear as a model number, series number or combination of letters and numbers, such as MG350, Series 100, ES-EL100 or SH7700A.
Check whether the item is fixed, sliding, casement, single-hung, French door, sliding glass door or another configuration.
Do not assume every item belongs to the same product line. Proposals commonly combine different models or series.
If the model or series is missing, ask for it in writing. A general description such as “impact window” does not provide enough information to determine which product line is being proposed.
Compare the product, not just the price
Enter the model or series number from your impact window or door proposal. Our free Model Decoder will identify the product line and show whether it falls within the builder-grade, signature or premium tier in our guide.
Product availability and specifications may change. A Bigfoot Project Advisor can confirm the appropriate series and configuration for each opening.