Name: Mastercraft 9 x 3 5/16 x 1” Jumbo Sanding Block, Medium Grit
Brand: Mastercraft
SKU: 0542166
Price: 8.49 CAD
Availability: InStock

Mastercraft 9 x 3 5/16 x 1” Jumbo Sanding Block, Medium Grit Overhead_Plunge

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Quebec residents: For information on maintenance and repair click here.

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Product Details

The Mastercraft 9 x 3 5/16 x 1” Jumbo Sanding Block, Medium Grit, lasts for much longer than sandpaper and is ideal for sanding down drywall and paint. This impressive sanding block can be used for both wet and dry applications, with 4 abrasive sides for general-purpose sanding of various surfaces. This oversized block is completely reusable, and lasts for way longer than regular sanding sheets. This durable Mastercraft sanding block is easy to rinse off with nothing more than water, and features a clog-resistant surface that allows for easier removal of substances like drywall compound. The waterproof sanding pad can also be fitted with sandpaper sheets of any grit, so you can adapt to the project at hand with the proper abrasive.

The Mastercraft 9 x 3 5/16 x 1” Jumbo Sanding Block, Medium Grit, lasts for much longer than sandpaper and is ideal for sanding down drywall and paint
Provides more surface coverage
Ideal for hand sanding applications
Size: 3 5/16 x 9" (8.4 x 22.9 cm)
Reusable; lasts longer than regular sandpaper
Medium abrasive

Part Number	428408
Tool Use	No Tool
Product Use(s)	Metal, Wood, Plastic
Abrasive Type	Sanding Block
Grit Number	0
Arbor Size	Not Applicable
Advanced Features	No Advanced Features
Consumer Pack Size	1
Maximum Speed (rpm)	0 r/min
Primary Material	Aluminum Oxide

Abrasive Type	Sanding Block
Advanced Features	No Advanced Features
Arbor Size	Not Applicable
Attachment Method	Not Applicable
Grit Number	0
Maximum Speed (rpm)	0 r/min
Package Depth (cm)	8.50 cm
Package Depth (in)	3.35 in
Package Height (cm)	1.90 cm
Package Height (in)	0.75 in
Package Weight (kg)	0.08 kg
Package Weight (lb)	0.17 lb
Package Width (cm)	28.00 cm
Package Width (in)	11.02 in
Primary Colour	Black
Primary Material	Aluminum Oxide
Product Diameter (in)	3.35 in
Product Diameter (in)	3.35 in
Product Height (cm)	23.01 cm
Product Height (cm)	23.01 cm
Product Height (ft)	0.75 ft
Product Height (ft)	0.75 ft
Product Height (in)	9.06 in
Product Height (in)	9.06 in
Product Length (cm)	2.49 cm
Product Length (cm)	2.49 cm
Product Length (ft)	0.08 ft
Product Length (ft)	0.08 ft
Product Length (in)	0.98 in
Product Length (in)	0.98 in
Product Thickness (cm)	0.00 cm
Product Thickness (cm)	0.00 cm
Product Thickness (in)	0.00 in
Product Thickness (in)	0.00 in
Product Thickness (mm)	0.00 mm
Product Thickness (mm)	0.00 mm
Product Use(s)	Metal, Wood, Plastic
Product Weight (kg)	0.08 kg
Product Weight (kg)	0.08 kg
Product Weight (lb)	0.17 lb
Product Weight (lb)	0.17 lb
Product Width (cm)	8.51 cm
Product Width (cm)	8.51 cm
Product Width (in)	3.35 in
Product Width (in)	3.35 in
Product Width (mm)	85.09 mm
Product Width (mm)	85.09 mm
Shape	Rectangle
Tool Use	No Tool

Warranty:

This product carries a 1 year exchange warranty redeemable at any Canadian Tire store.

Online Ordering

Pick Up is free at most stores (some stores require a minimum order value before tax)
Shipping fee is based on size and weight of products and distance from address to store
Same-Day Delivery costs $9.99 per order
Online Ordering Information

Returns

Most products can be returned or exchanged at any Canadian Tire store within 90 days of purchase
Some products are non-refundable and non-exchangeable
The return policy outlined above may not apply to the product you are currently viewing. For complete details and eligibility, please refer to our Return Policy for exceptions.

	Only Show Differences	Currently Viewing Mastercraft 9 x 3 5/16 x 1” Jumbo Sanding Block, Medium Grit $8.49	Mastercraft 2-5/8-in x 4-3/4-in Rubber Sanding Block $8.79	Mastercraft 4 x 2 ¾ x 1” Sanding Sponges 4-Pack, Medium Grit $9.79	Mastercraft 9 x 11” Sandpaper Set with 5 Pieces $7.49	Mastercraft 3-in x 4-in x 1-in Sanding Pads, 100-Grit, 3-pk $7.29
Ratings
Tool Use	No Tool	No Tool	No Tool	No Tool	No Tool	No Tool	No Tool	No Tool	No Tool	No Tool
Product Use(s)	Metal, Wood, Plastic	Metal, Wood, Plastic	Automotive, Dry Use, Ferrous Metal, Metal, Plastic, Polishing, Wet Use, Wood	Automotive, Dry Use, Ferrous Metal, Metal, Plastic, Polishing, Wet Use, Wood	Metal, Wood, Plastic	Metal, Wood, Plastic	Metal, Wood, Plastic	Metal, Wood, Plastic	Metal, Wood, Plastic	Metal, Wood, Plastic
Abrasive Type	Sanding Block	Sanding Block

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± Was price reflects the last national regular price this product was sold for

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®/TM Unless otherwise noted, all trademarks are owned by Canadian Tire Corporation, Limited and are used under license.

*Terms and conditions apply to collecting and redeeming. Visit triangle.com for full program rules. Ordinarily you are not able to collect Canadian Tire Money® (CT Money®) on that portion of a transaction in respect of which you redeemed CT Money, but can do so with this special offer. You may redeem for the full purchase price in CT Money to a maximum of $1,000 but bonus CT Money is calculated only on the pre-tax amount. Special offer not valid for Gift Card purchases. Pre-tax purchase. Bonus applied to maximum redemption of $1,000. No rainchecks.

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The Triangle Rewards Program is owned and operated by Canadian Tire Corporation, Limited. Triangle® credit cards are issued by Canadian Tire Bank. Rewards are in the form of electronic Canadian Tire Money® (CT Money®). To collect bonus CT Money you must present a Triangle Rewards card/key fob, or use any approved Cardless method, at time of purchase or pay with a Triangle credit card. You cannot collect paper Canadian Tire Money on bonus offers. Any bonus multiplier is based on the base rate of collecting CT Money (0.4%), and will be added to whatever the Member would otherwise collect, without the bonus. Example: On a $100 (pre-tax) purchase with a 20x bonus multiplier a Member would earn a bonus $8 in CT Money (20 X 0.4% X $100). The 50x for Triangle Mastercard, World Mastercard and World Elite Mastercard customers consists of the 10x everyday plus a 40x bonus. Not all items sold are eligible to earn CT Money or to be redeemed for. Conditions apply. Visit triangle.com for full program rules and Partner location information. The offered rate is exclusive of any bonus or promotional offers or redemption transactions. Minimum purchase of $250 or more required to receive the 30x bonus. Minimum $250 spend is on the pre-tax amount on the same tender and for a single transaction. $250 must be spent on items that earn CT Money. CT Money is collected on the pre-tax amount of the purchase. Bonus CT Money may take up to 5 weeks to be applied to the Member’s Triangle Rewards Account. No rainchecks.

*Terms and conditions apply to collecting and redeeming. Visit triangle.com for full program rules. Ordinarily you are not able to collect Canadian Tire Money® (CT Money®) on that portion of a transaction in respect of which you redeemed CT Money, but can do so with this special offer. You may redeem for the full purchase price in CT Money to a maximum of $1,000 but bonus CT Money is calculated only on the pre-tax amount. Special offer not valid for Gift Card purchases. Pre-tax purchase. Bonus applied to maximum redemption of $1,000. No rainchecks.

*The Triangle Rewards Program is owned and operated by Canadian Tire Corporation, Limited. The Triangle® credit cards are issued by Canadian Tire Bank. Rewards are in the form of electronic Canadian Tire Money® (CT Money®). To collect bonus CT Money you must present a Triangle Rewards card/key fob, or use any approved Cardless method, at time of purchase or pay with a Triangle credit card. You cannot collect paper CT Money on bonus offers. Minimum $150 spend is on the pre-tax amount on the same tender and for a single transaction. $150 must be spent on items that earn CT Money. Not all items sold at Canadian Tire are eligible to earn CT Money or to be redeemed for. Conditions apply. Visit triangle.com for full program rules and Partner location information. The offered rate is exclusive of any bonus or promotional offers or redemption transactions. CT Money is collected on the pre-tax amount of the purchase. Bonus CT Money may take up to 5 weeks to be applied to the Member’s Triangle Rewards Account. No rainchecks. Single use only per Triangle Rewards Account.

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*Prices valid April 10 - May 21, 2026. Up to 25% off on select tires. Selection varies by week. Discount will be applied before applicable taxes, eco fees and additional fees (where applicable) at the time of purchase. Not valid in conjunction with any other offer, coupon or discount. Some vehicle restrictions may apply. No rainchecks. See in store for details. Wheels/rims sold separately.

*Terms and conditions apply to collecting and redeeming. Visit triangle.com for full program rules. Ordinarily you are not able to collect Canadian Tire Money® (CT Money®) on that portion of a transaction in respect of which you redeemed CT Money, but can do so with this special offer. You may redeem for the full purchase price in CT Money to a maximum of $1,000 but bonus CT Money is calculated only on the pre-tax amount. Special offer not valid for Gift Card purchases. Pre-tax purchase. Bonus applied to maximum redemption of $1,000. No rainchecks.

*The Triangle Rewards Program is owned and operated by Canadian Tire Corporation, Limited. Triangle® credit cards are issued by Canadian Tire Bank. Rewards are in the form of electronic Canadian Tire Money® (CT Money®). To collect bonus CT Money you must present a Triangle Rewards card/key fob, or use any approved Cardless method, at time of purchase or pay with a Triangle credit card. You cannot collect paper Canadian Tire Money on bonus offers. Any bonus multiplier is based on the base rate of collecting CT Money (0.4%), and will be added to whatever the Member would otherwise collect, without the bonus. Conditions apply. Visit triangle.com for full program rules and Partner location information. The offered rate is exclusive of any bonus or promotional offers or redemption transactions. Minimum purchase of $150 or more required to receive the 20x bonus. Minimum $150 spend is on the pre-tax amount on the same tender and for a single transaction. $150 must be spent on items that earn CT Money. CT Money is collected on the pre-tax amount of the purchase. Bonus CT Money may take up to 5 weeks to be applied to the Member’s Triangle Rewards Account. No rainchecks. Single use only per Triangle Rewards Account.

†The Triangle Rewards Program is owned and operated by Canadian Tire Corporation, Limited. Triangle® credit cards are issued by Canadian Tire Bank. Rewards are in the form of electronic Canadian Tire Money® (CT Money®). To collect bonus CT Money you must present a Triangle Rewards card/key fob, or use any approved Cardless method, at time of purchase or pay with a Triangle credit card. You cannot collect paper Canadian Tire Money on bonus offers. Any bonus multiplier is based on the base rate of collecting CT Money (0.4%), and will be added to whatever the Member would otherwise collect, without the bonus. Example: On a $100 (pre-tax) purchase with a 10x bonus multiplier a Member would earn a bonus of $4 in CT Money (10 X .4% X 100). Not all items sold are eligible to earn CT Money or to be redeemed for. Conditions apply. Visit triangle.com for full program rules and Partner location information. The offered rate is exclusive of any bonus or promotional offers or redemption transactions. CT Money is collected on the pre-tax amount of the purchase. Bonus CT Money may take up to 5 weeks to be applied to the Member’s Triangle Rewards Account. No rainchecks. Offer valid on MotoMaster tires including Hydra Edge, Hydra Edge Plus, Performance Edge and Eliminator X-Trail A/T.
®/TM Mastercard, World Mastercard, World Elite and the circles are registered trademarks of Mastercard International Incorporated.
®/TM Unless otherwise noted, all trademarks are owned by Canadian Tire Corporation, Limited and are used under licence.

*The Triangle Rewards Program is owned and operated by Canadian Tire Corporation, Limited. The Triangle® credit cards are issued by Canadian Tire Bank. Rewards are in the form of electronic Canadian Tire Money® (CT Money®). To collect bonus CT Money you must present a Triangle Rewards card/key fob, or use any approved Cardless method, at time of purchase or pay with a Triangle credit card. You cannot collect paper CT Money on bonus offers. Minimum $150 spend is on the pre-tax amount on the same tender and for a single transaction. $150 must be spent on items that earn CT Money. Not all items sold at Canadian Tire are eligible to earn CT Money or to be redeemed for. Conditions apply. Visit triangle.com for full program rules and Partner location information. The offered rate is exclusive of any bonus or promotional offers or redemption transactions. CT Money is collected on the pre-tax amount of the purchase. Bonus CT Money may take up to 5 weeks to be applied to the Member’s Triangle Rewards Account. No rainchecks. Single use only per Triangle Rewards Account.

*The Triangle Rewards Program is owned and operated by Canadian Tire Corporation, Limited. The Triangle® credit cards are issued by Canadian Tire Bank. Rewards are in the form of electronic Canadian Tire Money® (CT Money®). To collect bonus CT Money you must present a Triangle Rewards card/key fob, or use any approved Cardless method, at time of purchase or pay with a Triangle credit card. You cannot collect paper CT Money on bonus offers. Minimum $150 spend is on the pre-tax amount on the same tender and for a single transaction. $150 must be spent on items that earn CT Money. Not all items sold at Canadian Tire are eligible to earn CT Money or to be redeemed for. Conditions apply. Visit triangle.com for full program rules and Partner location information. The offered rate is exclusive of any bonus or promotional offers or redemption transactions. CT Money is collected on the pre-tax amount of the purchase. Bonus CT Money collected from online orders will be applied to the Member’s Triangle Rewards Account within five weeks of the purchase date. No rainchecks.

The 20x Bonus is on all qualifying Kitchen Appliances, Cookware, and Furniture purchases. Not all items sold are eligible to earn CT Money or to be redeemed for. Conditions apply. Visit triangle.com for full program rules and Partner location information. The offered rate is exclusive of any bonus or promotional offers or redemption transactions. CT Money is collected on the pre-tax amount of the purchase. Bonus CT Money may take up to 5 weeks to be applied to the Member’s Triangle Rewards Account. No rainchecks. Gift cards and other items excluded.

®/™ Mastercard, World Mastercard, World Elite and the circles are registered trademarks of Mastercard International Incorporated.

®/™ Canadian Tire Money, CT Money, Triangle, Triangle Rewards and the Triangle design are registered trademarks owned by Canadian Tire Corporation, Limited, and the Triangle design are registered trademarks owned by Canadian Tire Corporation Limited and/or its affiliates. Used under license

*Summer exclusive promotion

Receive a cooler bag in yellow and 20 Nespresso iced coffee capsules with the purchase of a Nespresso Vertuo UP coffee machine* Select machines bought between May 21, 2026, and July 2, 2026, at participating retail partners, in-store or online, while supplies last. To redeem your summer gifts, visit promo.nespresso.ca

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