Best Shim Stock (2026 Guide)
We selected items by combining user ratings, review volume, material variety, common size ranges, and intended use cases to represent reliable options across price tiers
The Verdict
- Best Overall: Konohan Plastic Flat Shims for Leveling (3/64–15/64) in Multiple Colors — Best for multicolor marking: plastic flat shims that offer multiple fractional thicknesses for precise leveling
- Best Value: Pangda 100 Pack 8 Inch Composite Plastic Shims for Leveling — Best for furniture and general leveling: 8-inch composite shims in a 100-pack for repeatable adjustments
This guide reviews top-rated shim stock for leveling, installation, and trimming tasks across plastic, composite, cardboard, and wood materials. Selections were based on standardized rating signals, review volume, material type, and common use cases to highlight versatile and specialty options
Top Picks
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1
Best Overall Konohan Plastic Flat Shims for Leveling (3/64–15/64) in Multiple Colors
Best for multicolor marking: plastic flat shims that offer multiple fractional thicknesses for precise leveling
Plastic flat shims for leveling applications. Made of PP material for stability and durability; variety of sizes improves versatility. Customers note easy selection of thickness and functionality
- multiple thickness options
- colorful assortment
- stable, durable material
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2
Best Value Pangda 100 Pack 8 Inch Composite Plastic Shims for Leveling
Best for furniture and general leveling: 8-inch composite shims in a 100-pack for repeatable adjustments
Composite shims in a 100-pack for leveling and furniture adjustments. Includes 8" length, 1.5" width, 0.275" height with taper from 5/16" to 1/16" for versatile use. Positive customer insight noted
- 100-pack quantity
- exact dimensions provided
- tapered thickness for versatility
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3
Seajan Drywall Shims, 100 Pcs Cardboard Wallet Shims for Leveling
Best for drywall installers: cardboard wallet shims designed for quick, disposable leveling tasks
Cardboard shims for drywall and leveling applications. Includes 100 pieces for multiple uses with reliable, lightweight construction. Customer notes emphasize ample quantity and utility
- 100-piece quantity
- cardboard wallet design
- suitable for leveling and alignment
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4
Cedar Wood Shims 420 count – kiln-dried 8" shims
Best for construction framing: kiln-dried cedar wood shims in a large count for durable structural shimming
"Fine tipped cedar shims cut from kiln dried incense cedar that wont rot, twist or warp. Easy to cut; snap off cleanly."
- kiln-dried incense cedar
- won't rot, twist, or warp
- bulk 420 count
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5
Konohan Plastic Flat Shims for Leveling, 300 pcs
flat plastic option: a 300-piece pack of plastic shims suitable for tile and general leveling jobs
Plastic flat shims for leveling and spacing, made of PP material. Stable, reliable, and durable with resistance to wear, deformation, and fade. Customer note indicates stable performance
- 300-piece PP shims set
- stable and secure performance
- color variety for identification
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6
Stack Shims 500 pcs 3-1/2 in x 1/16 in Black for Windows & Doors
Best for windows and doors: 1/16-inch stack shims in black tailored for consistent jamb spacing
Set of 500 plastic stackable shims, 3-1/2 in length and 1/16 in thick. Shims can be used individually or stacked for precise door/window installations; bundles of 16 ease organization. Customer insight notes versatile use and organized storage
- 500 pieces in one set
- 3-1/2 in length
- 1/16 in thickness
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7
Pangda 250 Pack 8in Composite Plastic Shims for Leveling
Best for larger projects needing composite shims: 250-piece 8-inch set for repeatable leveling
Pangda composite shims set includes 250 pieces for leveling and adjusting furniture, tables, toilets, hot tubs, and more. Versatile 8" length with taper from 5/16" to 1/16" for varied gaps
- 250-piece kit
- 8-inch length with taper
- wide applicability across projects
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8
CRL Shimstack Shims 1/16" x 3-1/2" (Case of 1000)
Best for contractors needing volume: case of 1000 1/16-inch shimstacks for frequent shimming tasks
Shimstock with adjustable thickness and length; snap-off shims allow precise sizing. Installation tab aids insertion for consistent setup. Customer note highlights adaptable sizing
- adjustable thickness/length
- snap-off shims for precision
- insertion-friendly installation tab
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9
Nelson Wood Shims CSH12/42/12/48 B Wood Snapping Shim, 3/8 x 1-3/8 x 12-in, 42-Pk
Best for woodworkers who need snapping shims: pre-sized wood shims for quick splitting and fine adjustment
Wood snapping shims for precise height adjustments. sturdy, US-made construction. user notes show mixed insights but no explicit sentiment
- precise shim system
- multi-pack quantity
- country of origin
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10
Stack Shims 1000 pcs 3-1/2 in x 1/16 in for windows & doors
Best bulk window/door option: 1000-piece stack shims offering consistent 1/16-inch increments for installations
Pack of 1000 plastic shims, stackable and adjustable for door and window installations. Each shim is 3-1/2 in long and 1/16 in thick, allowing height and length adjustments. Convenient bundles of 16 for organized storage
- 1000-piece pack
- 3-1/2 in length
- 1/16 in thickness