These are our picks for premade cages. All the cages on this list are appropriately sized for 2 guinea pigs, and some of these systems can be connected to create even bigger spaces!
Best Overall: Kaytee Open Living Habitat — Best Overall
An open-top wire habitat with a waterproof clip-in liner. Comes in 8 sq. ft. (48"x24") and 12.5 sq. ft. (60"x30") sizes, and additional units can be connected for more room.
https://www.kaytee.com/all-products/small-animal/kaytee-open-living-habitat
Best for Expanding Later: MidWest Guinea Pig Habitat
A no-tools, canvas-bottom starter cage that can be connected to a second unit to expand from 8 sq. ft. up to 16 sq. ft.
https://www.midwesthomes4pets.com/product/small-animal/habitats-cages/guinea-habitat/
Best Budget Pick: Amazon Basics Canvas Bottom Cage
A budget-friendly wire-frame cage with a leak-proof canvas base and included divider, at roughly 47.6"L x 24.2"W.
https://www.amazon.com/AmazonBasics-Canvas-Bottom-Divider-Black/dp/B07KB49GZQ/
MidWest Wabbitat
Sold as a rabbit home but rated for guinea pigs too, with a deep plastic base for litter and top/side door access. Comes in several sizes, so check the dimensions before buying to make sure it clears the size minimums for two pigs.
https://www.midwesthomes4pets.com/product/small-animal/habitats-cages/wabbitat-rabbit-home/
Amazon Basics Top Access Cage
The Jumbo size measures 48.6"L x 26.6"W x 20.6"H and includes a balcony with ramp and hideaway space underneath.
https://www.amazon.com/AmazonBasics-Small-Animal-Habitat-Jumbo/dp/B0756GBCJ1
(Hagen) Living World Deluxe XL
A plastic-base, wire-top habitat measuring about 47"L x 23"W x 24"H.
https://www.amazon.com/Living-World-Deluxe-Habitat-X-Large/dp/B007BNE1YA/
Ferplast Krolik 140
Measures roughly 55.9"L x 23.6"W x 19.7"H including its attached extension, which can be separated off as a private nesting area.
https://www.ferplast.com/products/krolik-140
Ferplast Krolik 160
A larger version of the 140, at about 63.8"L x 23.6"W x 19.7"H, also with a separable wire extension.
https://www.ferplast.com/products/krolik-160
Ferplast Krolik 200
The largest in the Krolik line, with a separation grill included for splitting the cage into sections.
https://www.ferplast.com/products/krolik-200