{"product_id":"portable-plastic-greenhouse-plan","title":"Portable Plastic Greenhouse","description":"\u003cp\u003eA graceful little walk-in greenhouse from a 1963 USDA \/ University of Maryland plan (based on Oregon Plan 73) — the classic gothic-arch plastic house. Five arches stand 3'-0\" apart, and each half-arch is simply two thin exterior-plywood bands (1\/4\" × 4\" × 8'-0\"): the first is screwed to the base and bent over to the ridge, the second is glued and nailed on top, and the pair holds the pointed curve with no steam or forms. The arches spring from a doubled, treated 1×8 base staked to the ground and meet over a ridge of 1×10 ripped at 30°. Cover everything with plastic film, hang a framed door in each end and hinge the vent flap over each door to open 90° for air.\u003c\/p\u003e\u003ch3\u003eAt a glance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8'-6\" W × 12'-0\" L × 7'-0\" tall (259 × 366 × 213 cm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill:\u003c\/strong\u003e Intermediate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild time:\u003c\/strong\u003e 1–2 weekends\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials:\u003c\/strong\u003e approx. US$200–500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the plan:\u003c\/strong\u003e 19-page PDF, US Letter, 21 illustrated steps, imperial, with metric in the lists and steps\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInside the 19-page plan\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThe original public-domain sheet, restored and reproduced in full\u003c\/li\u003e\n\u003cli\u003eAn exploded drawing that shows how every part goes together\u003c\/li\u003e\n\u003cli\u003eDimensioned views of the finished build, in feet and inches\u003c\/li\u003e\n\u003cli\u003eMaterials list and hardware schedule, with today's actual lumber sizes and metric equivalents\u003c\/li\u003e\n\u003cli\u003eCut list, so you can cut everything before you start assembling\u003c\/li\u003e\n\u003cli\u003eClear illustrated step-by-step assembly drawings: one job per step, every part drawn, fastener positions marked\u003c\/li\u003e\n\u003cli\u003eA modern-build track: screws and today's materials, same dimensions\u003c\/li\u003e\n\u003cli\u003eThe Remix: build it as a Flower Market Stall\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eThe PDF plan is a digital download; nothing ships. The Printed Workshop Edition (PDF included) and the wall prints are printed to order and shipped. Adapted from USDA Cooperative Extension Service plan 5946, a public-domain original. Restored, redrawn and edited by Square \u0026amp; Furrow, produced with AI-assisted tools and checked against the original drawing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Square \u0026 Furrow","offers":[{"title":"Default Title","offer_id":55170264367445,"sku":"SF-5946","price":15.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1085\/1811\/3621\/files\/portable-plastic-greenhouse-plan-01-cover-21d241.jpg?v=1791201488","url":"https:\/\/squarefurrow.com\/products\/portable-plastic-greenhouse-plan","provider":"Square \u0026 Furrow","version":"1.0","type":"link"}