The 1421T4 is the largest square foot in the 1421-FEET Series: a package of 24 black feet, each 0.81 in (21 mm) wide and 0.30 in (8 mm) high. The wider footprint suits larger small-case enclosures, desktop units and tabletop equipment that need an anti-skid base.

Each foot is self-adhesive, using Natural Rubber R-30 adhesive. The part page lists the material as rubber, and the series data states the feet are made from polyurethane material (all but the 1421T7, which is SBR rubber). The series service temperature rating is -34°C to 66°C (-30°F to 150°F).

Adhesion tips from the manufacturer:

• Clean surfaces with isopropyl alcohol (rubbing alcohol)
• Apply firm pressure to generate good initial contact
• The adhesion bond will increase over time

The 1421T4 is RoHS compliant and REACH compliant. Its package has a shipping weight of 0.17 lbs (0.08 kg). If you need a smaller square foot, the series also includes the 0.50 in 1421T3 and 0.47 in 1421T8BK; for a round foot of similar width, see the 0.88 in 1421T9BK. Choose the 1421T4 when you want a broad square contact patch and 0.30 in of lift under the product.