TOPSTAR Blister-Pak

By GRK

TOPSTAR Blister-Pak by GRK
White zinc plated with starhead recess. Eliminates shimming.

GRK’s adjustable screw, the Top Star™, is a screw within a screw that reduces labor substantially for the installation of window and door frames, insulation and paneling, built-in wall units and cabinets. Our product is perfectly suited to meet the needs of both the professional and do-it-yourself installers. Fine adjustments are possible in both directions, helping to reduce the workload and make the job easier for one person.

  • For plumb installation of doors & windows
  • Great for fine adjustments
  • No hassle
  • Reduces labor
  • Eliminates shimming
Stock code Upc code Size Pieces Weight (lbs)
000077269124050 772691 24050 7 1/4 - 3/8 X2"1/2 1pkg=6pcs/blister-pak 0.2
000077269124100 772691 24100 9 1/4 - 3/8 X3"1/8 1pkg=6pcs/blister-pak 0.24
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