multiwall polycarbonate greenhouse plastic requirement sheet
Use this sheet when the line is multiwall polycarbonate greenhouse plastic. Neighbouring film wording is a different request. Greenhouse Plastic Sourcing does not reprint a wall count, U-value or light-transmission percentage as its own figure.
Fields that belong on the sheet
Mandatory fields stay on the first four rows. Optional fields can be marked “to confirm” without inventing a default. Treatment, color and the applicable ASTM standard are mandatory once a factory is asked to quote; they are optional only while the buyer is still choosing between film and panel.
| Field | Unit or pairing | Mandatory or optional | Supplier must confirm in writing |
|---|---|---|---|
| Wall count and thickness | Twin / triple / multiwall + millimetres or inches | Mandatory | Quoted wall count and measured thickness |
| Sheet size | Width × length; do not write “standard panel” | Mandatory | Cut size and tolerance method |
| Quantity | Panels or square feet / square metres with unit | Mandatory | Lot quantity and sample / production split |
| Destination | US state or postal code | Mandatory | Incoterms next to the money figure |
| Treatment / color | Clear, opal, or a named tint; UV-coated face | Mandatory on the quote; optional while still choosing form | Which face carries the UV coating |
| Applicable ASTM method | Named method and condition | Mandatory on the quote | Report that cites that method |
| Heat deflection temperature | °C @ 1.8 MPa if the drawing cites HDT | Optional unless the drawing cites it | Factory value for the quoted grade |
| Flame note | UL 94 only if the receiving plant files it | Optional | Rating at a stated thickness, not a site badge |
What the supplier must send back
- Full description as it will appear on the invoice, mapped to one inquiry form.
- Wall count, thickness, sheet size, treatment, color and the named ASTM method.
- Quantity and unit; sample versus production split.
- Documents that name the grade and lot — not a company-only ISO 9001 letter.
- Packing, origin of melt or finishing, Incoterms, and the date the factory says it can ship.
Commodity polyethylene film and this engineering panel are different lines. If the buyer later wants film, open a new request; do not treat the swap as a courtesy upgrade.