system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
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Italian company ("Medica"). WHEREAS, Vapotherm sells systems it has developed for delivering humidified, blended medical gas therapy (the "System"), which system includes a vapor transfer cartridge; WHEREAS, Vapotherm and Medica wish for Medica to manufacture [* * *] (each, a "Cartridge" and collectively, the "Cartridges") for Vapotherm for use in the System, using fiber provided by Medica as developed for the System and packaged as specified in Vapotherm Specification Exhibit D. NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt and sufficiency of which have hereby acknowledged, the parties therefore agree as follows: ARTICLE 1 SALE AND PURCHASE 1.1 Supply of Cartridge. Subject to the terms of this Agreement, Medica shall manufacture, in such quantities as Vapotherm orders, the Cartridge. 1.2 [* * *] 1.3 Purchase of Cartridge. Subject to the terms of this Agreement, Vapotherm shall purchase from Medica Cartridges following regulatory approval. ARTICLE 2 FORECASTS; INVENTORY 2.1 Rolling Forecasts. Attached hereto and incorporated herein by reference as Exhibit A-2 is Vapotherm's initial forecast of Cartridges that Vapotherm will purchase for delivery on a monthly basis in calendar year 2013 (the "Initial Forecast"). On or prior to January 1, 2013 (the "Forecast Initiation Date"), Vapotherm shall deliver to Medica a forecast of Cartridge demand in each of the [* * *] consecutive months beginning one month following the FID. On or prior to one month following the FID, Vapotherm shall provide a forecast for the next [* * *] consecutive months beginning [* * *] months following the FID. On or prior to the first day of each subsequent month, Vapotherm shall deliver to Medica an update to its previously submitted forecast of its expected purchases of Cartridges (each forecast delivered pursuant to this Section 2.l(a), a "Rolling Forecast"). [* * *] = Certain confidential information contained in this document, marked by brackets, has been omitted and filed separately with the Securities and Exchange Commission pursuant to Rule 406 of the Securities Act of 1933, as amended. (a) Vapotherm will place a firm Purchase Order for the following [* * *] months. Every month there after, Vapotherm will placed a PO for the following month to maintain a rolling [* * *] month commitment. (b) The forecast for any month specified in any Rolling Forecast may not be less than the total number of Cartridges for which Vapotherm, prior to delivery of that Rolling Forecast to Medica in accordance with Section 2.l(a), has submitted purchase orders in accordance with Section 3.2 specifying a delivery date in that month. 2.2 Inventory. During the Term, Medica shall at all times maintain as safety stock that quantity of Cartridges equal to one (1) times the monthly average number of Cartridges ordered by Vapotherm during the immediately preceding [* * *] months. ARTICLE 3 ORDERS, SHIPMENT, AND PAYMENT 3.1 Price. The price paid by Vapotherm for any given shipment of Cartridges during the Initial Term is as stated in Exhibit A-1. No later than [* * *] days prior to the end of the Initial Term and each Renewal Term, Medica shall provide Vapotherm with reasonable documentation of its actual and direct costs in manufacturing the Cartridges (the "Costs"). The parties will then negotiate in good faith the Cartridge prices for the subsequent 3.2 Purchase Orders. (a) Each purchase order that Vapotherm places for Cartridges must be in the form attached as Exhibit B and must specify (1) how many Cartridges are desired, (2) the one or more places to which, and the manner and date by which, delivery is to be made, and (3) the applicable price per Cartridge. Vapotherm shall deliver all purchase orders by facsimile, or by one of the means specified in Section 14.8 for giving notice, to Medica at the following address and facsimile number or as otherwise instructed by Medica: Medica S.p.A. Via Degli Artigiani, 7 41036 Medolla (MO) Italy Attention: Daniele Giubertoni MKTG & Sales Manager Facsimile: 39-0535-52605 E-mail: daniele.giubertoni@medica.it (b) Vapotherm shall order for delivery in any given month an aggregate number of Cartridges equal to at least [* * *]% of the final amount forecast for that month in the Rolling Forecasts (that quantity, the "Final Forecast Quantity"). Vapotherm may order for delivery in any given Quarter an aggregate quantity of Cartridge not exceeding [* * *]% of the Final Forecast Quantity. Only with Medica's written consent may Vapotherm order for delivery in any given Quarter an aggregate number of Cartridges exceeding [* * *]% of the
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Extract the exact clause related to "Warranty Duration" from the excerpt above.