I wrought a disappointed E-mail to the manufacturer : 2 days ago I unpacked the green house  and while I was assembling it ; several parts were missing like;....4 connectors with 5 holes./ 4with 5 holes./ 8 long tube with  a #16 
AND 12 SHORT TUBE. BUT,I WAS VERY PLEASED  TO RECEIVE THE PACKAGE IN 3 DAYS . For that my review is a 5 PS: they told me  They are on company vacation and will honer my complain after they come back.Not good for me. Thank you.My phone is 410-821-6872