{"product_id":"growers-select-monotub-replacement-lids-28q-44q-66q","title":"Grower's Select Monotub Replacement Lids – 28Q, 44Q \u0026 66Q","description":"\u003cstyle\u003e\n.mgk-product { line-height: 1.6; color: #222; }\n.mgk-product h2 { color: #1a6b3a; font-size: 1.35em; margin: 1.4em 0 .5em; }\n.mgk-product ul { margin: .4em 0 1em 1.2em; }\n.mgk-product li { margin-bottom: .4em; }\n.mgk-product .mgk-note { border-left: 4px solid #1a6b3a; background: #f3f8f4; padding: .8em 1em; margin: 1.2em 0; border-radius: 0 6px 6px 0; }\n.mgk-product table { width: 100%; border-collapse: collapse; margin: 1em 0; }\n.mgk-product th, .mgk-product td { border: 1px solid #ddd; padding: .6em .7em; text-align: left; font-size: .95em; }\n.mgk-product th { background: #1a6b3a; color: #fff; }\n.mgk-product a { color: #1a6b3a; font-weight: 600; }\n\u003c\/style\u003e\n\u003cdiv class=\"mgk-product\"\u003e\n\u003cp\u003eReplacement \u003cstrong\u003eGrower's Select monotub lids\u003c\/strong\u003e — sold on their own for growers who need a spare, a fresh lid for a new tub, or a swap-out after wear. Molded from durable polypropylene with pre-cut 2\" holes for fresh air exchange (FAE), each lid is sized to seat firmly on the matching monotub base. Choose your size above: \u003cstrong\u003eSmall (28Q)\u003c\/strong\u003e, \u003cstrong\u003eMedium (44Q)\u003c\/strong\u003e, or \u003cstrong\u003eLarge (66Q)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"mgk-note\"\u003e\n\u003cstrong\u003eLid only.\u003c\/strong\u003e This listing is for the clear top lid by itself — it does not include the tub base, liner, or filter disks. Need the breathable filters that cover the holes? Grab our \u003ca href=\"\/collections\/monotub-filter-disks-accessories\"\u003emonotub filter disks \u0026amp; accessories\u003c\/a\u003e.\u003c\/div\u003e\n\u003ch2\u003eEach Lid Features:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-cut 2\" FAE holes\u003c\/strong\u003e — positioned for balanced airflow across the substrate surface, so you get even pinning instead of side-only or corner fruiting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSized for standard filter disks\u003c\/strong\u003e — the holes accept standard adhesive filter disks for contamination-resistant gas exchange.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear polypropylene\u003c\/strong\u003e — lets you monitor colonization and pinning without disturbing the tub.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnug, secure fit\u003c\/strong\u003e — built to seat firmly on the matching tub base to hold humidity.\u003c\/li\u003e\n\u003cli\u003eShips fast from our Illinois facility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSize guide\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eFits Tub\u003c\/th\u003e\n\u003cth\u003eFootprint\u003c\/th\u003e\n\u003cth\u003eFilter Holes\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall\u003c\/td\u003e\n\u003ctd\u003e28 Quart\u003c\/td\u003e\n\u003ctd\u003e12\" × 12\"\u003c\/td\u003e\n\u003ctd\u003e4 × 2\"\u003c\/td\u003e\n\u003ctd\u003eFirst grows \u0026amp; small batches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e44 Quart\u003c\/td\u003e\n\u003ctd\u003e18\" × 15.5\"\u003c\/td\u003e\n\u003ctd\u003e6 × 2\"\u003c\/td\u003e\n\u003ctd\u003eThe most popular all-around size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e66 Quart\u003c\/td\u003e\n\u003ctd\u003e22.5\" × 15.5\"\u003c\/td\u003e\n\u003ctd\u003e6 × 2\"\u003c\/td\u003e\n\u003ctd\u003eMaximum yield bulk grows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eHow it works with your monotub\u003c\/h2\u003e\n\u003cp\u003eThe lid holes are covered with breathable \u003ca href=\"\/collections\/monotub-filter-disks-accessories\"\u003efilter disks\u003c\/a\u003e that let CO₂ escape and fresh air in while blocking contaminants. Fresh air exchange is what triggers and drives pinning, so a properly fitted lid with clean filters is central to a healthy fruiting cycle. For substrate-to-spawn ratios and fruiting conditions for each tub size, see our \u003ca href=\"\/blogs\/learn\/bulk-monotub-grow-guide-step-by-step\"\u003estep-by-step bulk monotub grow guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eSetting up a complete tub from scratch? Browse our full \u003ca href=\"\/collections\/monotubs-accessories\"\u003emonotubs \u0026amp; accessories\u003c\/a\u003e collection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Grower's Select","offers":[{"title":"Small 28Q","offer_id":47408616079509,"sku":"LID1","price":9.0,"currency_code":"USD","in_stock":true},{"title":"Medium 44Q","offer_id":47408616112277,"sku":"LID2","price":15.0,"currency_code":"USD","in_stock":true},{"title":"Large 66Q","offer_id":47408616145045,"sku":"LID3","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Tops_for_tubs.jpg?v=1780573164","url":"https:\/\/www.midwestgrowkits.com\/products\/growers-select-monotub-replacement-lids-28q-44q-66q","provider":"Midwest Grow Kits","version":"1.0","type":"link"}