Check the listing for details. 250 Double Window Security Gummed Check Envelopes - Compatible for QuickBooks. Condition: New. Listed at 21.59 USD. Product FeaturesWhite Security EnvelopeDouble Window IMPROVED SECURITY – Envelopes are tamper proof and come with enhanced security tint for protecting essential financial business documents.EASY VIEW ACCESS WINDOW – Dual front windows help improve mail service efficiency while ensuring your recipients know exactly who sent them a letter.Dimensions: 3-5/8 X 8-3/4250 - COUNT ENVELOPE PACKAGES – Each box comes with 250 premium-grade business envelopes designed specifically for checks.CRISP DURABILITY – Boasting a thicker, bright white stock and self-seal flap creates stronger paper to ensure your documents reach their destination safely.Guaranteed to fit your computer business checks Product Description IMPROVED SECURITY – Envelopes are tamper proof and come with enhanced security tint for protecting essential financial business documents Size250 EnvelopesMaterialPaperBrandCompuchecksClosure TypeGummed