1 7/8" (1.90 O.D.) 13 ga. ground posts

Pre-drilled for 5/16" carriage bolts. 4 ft. long, pre-drilled for 5/16" carriage bolts.  Used for 1 3/8" (1.315 O.D. 17 Ga.) bows.  For 1 5/8" or 1 7/8" bows, use the

1 5/8" OD, 14 gauge 8" long insert for joining unswedged Nor'Easter bows (1 7/8" OD, 13 gauge) to ridge connectors and

Used for driving ground posts. 1 5/8" is for Bobcat ground posts 1 7/8" is for 

Roll your greenhouse curtains up and down with the Guide Pipe for Roll-Up Curtain.

Attach to the roller bar with tek screws to hold poly (curtain) to roller bars. Much better than curtain clips because poly does not tear.