Skip to main content

DEDUCTIONS AND EXISTING STOCK

Open box liner blank — inside base length scenarios.

How does changing inside base length affect open box liner blank when the other inputs stay fixed?

What this decision changes

A known internal space, existing stock or shared quantity must enter the correct subtraction or eligibility step rather than being counted as new material. Method basis: Size one rectangular liner blank for an open rectangular box with specified depth and edge allowance. Blank dimensions only, not a waterproofing design or installation method.

The focus is inside base length. All other shared inputs remain fixed for each evaluated range.

Blank = (inside length + 2 depth + 2 edge allowance) × (inside width + 2 depth + 2 edge allowance).Open Box Liner Blank Calculator

Evaluate your supplied alternatives

Start with your measured plan and selected product data. The initial values and range are illustrative. Each scenario changes only inside base length; the other entered values stay fixed.

Display units

Measured plan and product inputs

Inside base length

m

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Inside base width

m

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Specified covered depth

m

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Specified extra allowance at every outer edge

m

Supplied comparison range for inside base length

Lower supplied comparison value

m

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Upper supplied comparison value

m

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Nine evenly spaced values are evaluated. Whole counts are rounded to distinct integer scenarios. Values between the listed samples are not calculated.

9 evaluated scenarios

Baseline: Rectangular liner blank area — 7.04 m². Rejected combinations remain visible below.

Quantity to plot

Each bar is one actual calculated rectangular liner blank area. Horizontal values: inside base length in m.

Inside base length	Rectangular liner blank area	Change from baseline	Use this scenario
1.2 m	5.28 m²	-1.76 m²	Open in calculator Exact quantity breakdown Blank length 2.4 m Blank width 2.2 m Geometric inside surface 3.4 m² Blank beyond geometric surface 1.88 m² An uncut rectangular blank with corner surplus. Does not provide folding, joining, drainage, waterproofing or material-compatibility instructions.
1.45 m	5.83 m²	-1.21 m²	Open in calculator Exact quantity breakdown Blank length 2.65 m Blank width 2.2 m Geometric inside surface 3.9 m² Blank beyond geometric surface 1.93 m² An uncut rectangular blank with corner surplus. Does not provide folding, joining, drainage, waterproofing or material-compatibility instructions.
1.7 m	6.38 m²	-0.66 m²	Open in calculator Exact quantity breakdown Blank length 2.9 m Blank width 2.2 m Geometric inside surface 4.4 m² Blank beyond geometric surface 1.98 m² An uncut rectangular blank with corner surplus. Does not provide folding, joining, drainage, waterproofing or material-compatibility instructions.
1.95 m	6.93 m²	-0.11 m²	Open in calculator Exact quantity breakdown Blank length 3.15 m Blank width 2.2 m Geometric inside surface 4.9 m² Blank beyond geometric surface 2.03 m² An uncut rectangular blank with corner surplus. Does not provide folding, joining, drainage, waterproofing or material-compatibility instructions.
2.2 m	7.48 m²	0.44 m²	Open in calculator Exact quantity breakdown Blank length 3.4 m Blank width 2.2 m Geometric inside surface 5.4 m² Blank beyond geometric surface 2.08 m² An uncut rectangular blank with corner surplus. Does not provide folding, joining, drainage, waterproofing or material-compatibility instructions.
2.45 m	8.03 m²	0.99 m²	Open in calculator Exact quantity breakdown Blank length 3.65 m Blank width 2.2 m Geometric inside surface 5.9 m² Blank beyond geometric surface 2.13 m² An uncut rectangular blank with corner surplus. Does not provide folding, joining, drainage, waterproofing or material-compatibility instructions.
2.7 m	8.58 m²	1.54 m²	Open in calculator Exact quantity breakdown Blank length 3.9 m Blank width 2.2 m Geometric inside surface 6.4 m² Blank beyond geometric surface 2.18 m² An uncut rectangular blank with corner surplus. Does not provide folding, joining, drainage, waterproofing or material-compatibility instructions.
2.95 m	9.13 m²	2.09 m²	Open in calculator Exact quantity breakdown Blank length 4.15 m Blank width 2.2 m Geometric inside surface 6.9 m² Blank beyond geometric surface 2.23 m² An uncut rectangular blank with corner surplus. Does not provide folding, joining, drainage, waterproofing or material-compatibility instructions.
3.2 m	9.68 m²	2.64 m²	Open in calculator Exact quantity breakdown Blank length 4.4 m Blank width 2.2 m Geometric inside surface 7.4 m² Blank beyond geometric surface 2.28 m² An uncut rectangular blank with corner surplus. Does not provide folding, joining, drainage, waterproofing or material-compatibility instructions.

Read the evaluated results

Watch the net requirement and actual order separately. Invalid rows identify combinations that cannot satisfy the method's geometric or stock-basis constraints.

Replace every illustrative baseline measurement and selected product value with the inputs for your actual task.
Enter a comparison range on the focused input's stated unit and quantity basis.
Review rejected combinations and use the exact detail lines to distinguish measured demand from whole purchases.
Open an evaluated scenario in the full calculator to save its original inputs and quantity breakdown to a browser material project.

Keep the comparison within scope

The supplied cavity, exclusion or stock eligibility must already be valid; the result does not select a safe shell, opening or construction detail.

Blank dimensions only, not a waterproofing design or installation method.

Dimensions, allowances, prices, properties and specifications are supplied by you. The tool computes their arithmetic consequences; it does not choose construction specifications or certify suitability.

Only the listed samples are evaluated. Intermediate values, alternate constraints and global cutting optimality are not inferred from the graph.

Continue with this quantity method

Open Box Liner Blank Calculator

Other independent input decisions

Prepare the actual material data

Read the measurement and purchase guides

Distinguish a rectangular liner blank from inside box surface area

Quantity method and illustrative scenarios checked 6 October 2026. Methods and scope.